| Absolute Hunter Jumpers | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Sammamish, Washington |
| Aleron Training Stables | Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson | Kirkland, Washington |
| Alexandra Brooks Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson | Snohomish, Washington |
| All Tacked Up Horse Riding Academy | Tack Shop, Horse Camps, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Spanaway |
| Amy Allen Horsemanship | Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson | Shelton, Washington |
| Anderson Snowy Mountain Stables | Boarding Stable | Washington, Mount Vernon |
| Anlan Cathal Ranch | Boarding Stable | Washington, Port Orchard |
| Anna’s Pasture Boarding | Boarding Stable, Horseback Riding | Washington, Duvall |
| Archway Equestrian Sports | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Sammamish |
| Artois Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson | Olympia, Washington |
| Aspen Farms | Coaches & Trainers, Horse Show, Riding Lesson, Trail Rides, Horseback Riding, Horse Camps, Boarding Stable | Washington, Yelm |
| Aspen Grove Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Enumclaw |
| Back Country Quarter Horses | Boarding Stable | Washington, Longview |
| Bar UK River Ranch | Trail Rides, Horseback Riding, Boarding Stable | Washington, Ridgefield |
| Bay Acres Stables | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Chimacum |
| Bay City Dressage | Riding Lesson, Boarding Stable, Coaches & Trainers | Washington, Woodinville |
| Bayview Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Seattle |
| Beldar Haven Farm | Boarding Stable | Washington, Bellingham |
| Beth Anderson Ness Dressage | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Lakebay |
| Blue Diamond Ranch | Riding Lesson, Trail Rides, Horseback Riding, Boarding Stable | Washington, Roy |
| Blue Heron Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Poulsbo |
| Boblets Lone Eagle Ranch | Boarding Stable | Washington, Poulsbo |
| Bolender Horse Park | Boarding Stable, Coaches & Trainers, Horse Show, Horseback Riding, Riding Lesson, Trail Rides | Centralia, Washington |
| Breezy Valley Ranch | Boarding Stable, Horseback Riding | Washington, Sedro Woolley |
| Briarwood Farms | Boarding Stable | Washington, Rochester |
| Briarwood Stables | Boarding Stable | Washington, Renton |
| Bridlewood Stables – Kirkland, WA | Trail Rides, Horseback Riding, Boarding Stable | Washington, Kirkland |
| Brindle Ridge Farms | Boarding Stable, Coaches & Trainers, Riding Lesson | Ridgefield, Washington |
| Burkeridge Farms | Boarding Stable, Coaches & Trainers, Hay Provider, Riding Lesson, Horseback Riding | Ellensburg, Washington |
| Burkwood Farm | Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson, Horseback Riding | Washington, Custer |
| C Bar Ranch | Boarding Stable, Coaches & Trainers | Washington, Yelm |
| Cadbury Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Bellevue |
| Cadence Dressage | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Auburn |
| Canter Lane Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Olympia |
| Cantera Equestrian | Equine Bodywork, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ridgefield |
| Capstone Training | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Snohomish |
| Cavallis at Misfit Farms | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Redmond |
| Cedar Meadow Farm | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Snohomish |
| Centerline Riding Academy | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Woodinville |
| Centerline The English Riding Academy | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Woodinville |
| Charlottewood Equestrian Center | Boarding Stable, Horseback Riding | Washington, Woodinville |
| Chastain Mist Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Olympia |
| Chez Jacroux | Boarding Stable, Coaches & Trainers, Horseback Riding | Washington, Bellevue |
| CJB Dressage | Coaches & Trainers, Riding Lesson, Boarding Stable | Washington, Spokane |
| Clover Hill Stables, LLC | Boarding Stable, Horseback Riding | Washington, Snohomish |
| Clover Valley Riding Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Port Orchard |
| Coastal Equine Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Ferndale |
| Collinswood Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Stanwood |
| Copple Show Horses | Coaches & Trainers, Riding Lesson, Boarding Stable | Washington, Rochester |
| Cornerstone Equestrian Center, Inc. | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Winlock |
| Cougar Mountain Stables | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Renton |
| Crazy Horse Natural Horsemanship | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Redmond |
| Crazy8 Stables and Trails | Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson, Trail Rides | Ridgefield, Washington |
| Creekside Stables | Riding Lesson, Horseback Riding, Boarding Stable, Coaches & Trainers | Washington, Bothell |
| Creidmount Saddle Club | Riding Lesson, Horseback Riding, Horse Camps, Boarding Stable, Coaches & Trainers, Horse Show | Washington, Bellingham |
| Crossroads Equestrian Center | Boarding Stable | Washington, Shelton |
| Deerfield Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding, Horse Camps | Washington, North Bend |
| Derby Farms | Riding Lesson, Boarding Stable, Coaches & Trainers | Washington, Woodinville |
| Diamond Bar K Performance Horses | Coaches & Trainers, Riding Lesson, Boarding Stable | Washington, Yakima |
| Donida Farm Training Center | Boarding Stable, Coaches & Trainers, Horseback Riding | Washington, Auburn |
| Double S Quarter Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Burlington |
| Dreamswept Farm | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Kettle Falls, Washington |
| Dressage Dancers | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Woodinville |
| Dutch Mills Farm | Boarding Stable, Riding Lesson, Coaches & Trainers, Horse Show, Horseback Riding | Arlington, Washington |
| Dynasty Stables | Boarding Stable, Breeder, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Kent |
| Eagle Ridge Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Arlington |
| El Dorado Farms | Boarding Stable, Breeder, Horseback Riding | Washington, Enumclaw |
| Elizabeth Youatt | Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson | Snohomish, Washington |
| Elliott Horsepower Ranch | Boarding Stable | Washington, Vancouver |
| Emerald Lane Horse Center | Boarding Stable | Washington, Bothell |
| Emerson Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ridgefield |
| Encanto Valley Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Maple Valley |
| Ensbrook Farm | Riding Lesson, Horseback Riding, Boarding Stable, Breeder, Coaches & Trainers | Washington, Arlington |
| Equi-librium Equestrian | Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson | Battle Ground, Washington |
| Equidae Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Snohomish |
| Equinox Farm | Boarding Stable | Issaquah, Washington |
| Erika Lee Equestrian | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Monroe |
| Evolution Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Poulsbo |
| Faith Farm | Coaches & Trainers, Riding Lesson, Boarding Stable | Washington, Redmond |
| Falconridge Farm | Boarding Stable | Washington, Seattle |
| Farmhill Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ridgefield |
| Farpoint Farm Training Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Snohomish, Washington |
| Fauntleroy Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Woodinville |
| Flicka Farms | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Redmond |
| Flying F Sport Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Kingston |
| Flying Horseshoe Ranch | Riding Lesson, Trail Rides, Guest Ranch, Horseback Riding, Boarding Stable | Washington, Cle Elum |
| Flying M Stables | Boarding Stable, Coaches & Trainers, Riding Lesson, Guest Ranch, Horseback Riding | Washington, Olympia |
| Forest Park Equestrian Center | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Olympia |
| Fort Lewis Riding Club | Boarding Stable, Horseback Riding | Washington, Tacoma |
| Freedom Farm | Boarding Stable | Washington, Port Angeles |
| Freedom Run Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding, Horse Camps | Kent, Washington |
| Fuerza Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, North Bend |
| Full Gallop Eventing | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Monroe |
| Genny Miller Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ellensburg |
| Ginger Leeper Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Everson |
| Glory Days Equestrian | Horseback Riding, Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson | Washington, Issaquah |
| Gold Creek Equestrian | Horse Show, Riding Lesson, Horseback Riding, Horse Camps, Rescue Organization, Boarding Stable, Coaches & Trainers | Washington, Woodinville |
| Gold Creek Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding, Horse Camps, Rescue Organization | Washington, Woodinville |
| Golden Gait Farm – WA | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Redmond |
| Grand Farms Eventing | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Vaughn |
| Grateful Pine Farm | Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson, Horseback Riding | Washington, Snohomish |
| GrayStone Stables & Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Snohomish |
| Green Valley Stables | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Auburn |
| GreenScene Agritek | Boarding Stable | Washington, Seattle |
| Greenstone Farm | Boarding Stable, Riding Lesson, Horseback Riding | Washington, Mount Vernon |
| Grouse Creek Bed and Breakfast | Guest Ranch, Boarding Stable | Spokane, Washington |
| Half Trak Farm | Horseback Riding, Boarding Stable, Riding Lesson | Washington, Stanwood |
| Happy Horse Riding School | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Burbank |
| Happy Trails Boarding | Boarding Stable | Washington, White Salmon |
| Harbor Downs Eventing | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Auburn |
| Harmony Hill Stables | Boarding Stable, Riding Lesson, Horseback Riding | Washington, Freeland |
| Harmony Hills Stables | Boarding Stable, Riding Lesson, Trail Rides, Horseback Riding | Freeland, Washington |
| Hawkins Equine | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ridgefield |
| Hawkwind Farm | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Duvall |
| Heirloom Equestrian Center | Boarding Stable | Washington, Battle Ground |
| Hidden Fox Farm Horse Sales | Coaches & Trainers, Horseback Riding, Boarding Stable, Breeder | Washington, Ridgefield |
| Hidden River Ranch | Boarding Stable, Horseback Riding | Washington, Sultan |
| Hidden Trail Stables | Boarding Stable | Washington, Spokane |
| Hidden Valley Ranch | Boarding Stable | Everson, Washington |
| High Country Training | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ellensburg |
| High Point Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Tacoma |
| Hillcrest Training & Sales | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Woodinville |
| Holly Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Bothell |
| Hollywood Hill Equestrian Center | Horseback Riding, Horse Camps, Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson, Trail Rides | Washington, Woodinville |
| Homestead Boarding | Boarding Stable | Washington, Renton |
| Honey Do Farms | Boarding Stable, Riding Lesson, Horseback Riding | Washington, Bellevue |
| Horse Lover’s Haven | Boarding Stable | Washington, Longview |
| Horsemen’s Western Dressage | Boarding Stable, Coaches & Trainers | Washington, Benton City |
| Hunter’s Run Equestrian Center | Coaches & Trainers, Horse Show, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Maple Valley |
| Infinity Farms | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Enumclaw |
| Infinity Hunters and Jumpers | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Sammamish, Washington |
| Jeff Williams Quarter Horses | Boarding Stable, Breeder, Coaches & Trainers, Horseback Riding, Riding Lesson | Graham, Washington |
| JS Equestrian Sports | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Snohomish |
| JT Ranch | Boarding Stable, Coaches & Trainers, Riding Lesson, Trail Rides, Guest Ranch, Horseback Riding | Washington, Spokane |
| JumpStart Training | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Issaquah |
| Kadence Northwest Equestrian Academy | Boarding Stable, Coaches & Trainers, Riding Lesson | Bainbridge Island, Washington |
| Karma Huff Training | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Poulsbo |
| Kathryn Christensen Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Monroe, Washington |
| Keev Farm | Boarding Stable, Coaches & Trainers, Horse Camps, Riding Lesson | Olympia, Washington |
| Kellmer Performance Horses | Riding Lesson, Boarding Stable, Coaches & Trainers | Washington, Battle Ground |
| Kelly Park Stables | Riding Lesson, Boarding Stable, Coaches & Trainers | Washington, Bellingham |
| Kimberly Mitchell Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Snohomish |
| Klear Mont Farms | Riding Lesson, Horseback Riding, Boarding Stable, Coaches & Trainers | Washington, Tacoma |
| Kozy Manor Stables | Boarding Stable | Washington, Ridgefield |
| KW Stables | Boarding Stable | Washington, Stanwood |
| Lang’s Horse & Pony Farm | Horse Camps, Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson, Trail Rides | Seattle, Washington |
| Larson Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Arlington |
| Legacy Equine Leadership Development | Riding Lesson, Boarding Stable, Coaches & Trainers | Washington, Redmond |
| Legacy Hunter & Jumpers | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Woodinville |
| Legacy Hunters and Jumpers | Horse Show, Riding Lesson, Boarding Stable, Coaches & Trainers | Woodinville, Washington |
| Legacy Stables – Roy, WA | Boarding Stable, Riding Lesson, Horseback Riding | Washington, Roy |
| Legends Horse Training | Riding Lesson, Trail Rides, Horseback Riding, Carriage Rides, Boarding Stable, Coaches & Trainers | Washington, Roy |
| Lisa Freimark Performance Training | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Snohomish |
| Lisa Weis Classical Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Mount Vernon |
| Longacre Stables & School of Horsemanship | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Longview |
| Lucky 13 Ranch | Boarding Stable, Horseback Riding | Washington, Arlington |
| Lucky Spur Ranch | Horseback Riding, Boarding Stable, Breeder, Coaches & Trainers | Washington, Graham |
| M Bar J Ranch | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Okanogan |
| M Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Seattle |
| Magnolia Ridge Training Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Redmond |
| Matt Olson Horse Training | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Silverdale |
| McCann Performance Horses | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Graham |
| Meadow View Farm | Boarding Stable | Washington, Spokane |
| Medicine Horse Stables | Boarding Stable | Washington, Spokane |
| Melissa Sexton Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Okanogan, Washington |
| Mercer Island Saddle Club | Boarding Stable, Horseback Riding | Washington, Bellevue |
| Meridian Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Lynden |
| Meridian Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Spokane |
| Midnight Mountain Stables & Arena | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Roy |
| Misty Hollow Farms | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Woodinville |
| Monroe Farms | Boarding Stable, Equestrian Club | Washington, Deer Park |
| Morning Star Farm – North Bend, WA | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, North Bend |
| Morris Stables | Boarding Stable, Coaches & Trainers, Riding Lesson | Deer Park, Washington |
| Mortensen Equine Care | Boarding Stable, Coaches & Trainers | Washington, Olympia |
| Mountain Bear Farm | Boarding Stable | Washington, Issaquah |
| Mountain Meadow Equestrian Center | Boarding Stable | Washington, Battle Ground |
| Mt View Stables | Boarding Stable | Washington, Ridgefield |
| Napoleon Ltd Eventing & Dressage | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Seattle |
| New Balance Training | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Snohomish, Washington |
| Next Phase Eventing | Boarding Stable, Coaches & Trainers, Horseback Riding, Horse Camps | Washington, Seattle |
| Noble Hunters & Jumpers | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Snohomish |
| Nodaway Farm | Boarding Stable, Equine Assisted Therapy | Washington, Sequim |
| North Star Farms – Arlington, WA | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Arlington |
| Northwest Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Ridgefield |
| Northwest Natural Horsemanship Center | Riding Lesson, Horseback Riding, Horse Camps, Boarding Stable, Coaches & Trainers | Washington, Bellevue |
| Northwind Pet Care Center | Boarding Stable | Washington, Olympia |
| Northwood Stables | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ridgefield |
| Novella Farms | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Redmond, Washington |
| Okjen Farm | Boarding Stable, Breeder, Coaches & Trainers, Horseback Riding | Washington, Bellingham |
| One Mile to Go | Boarding Stable, Horseback Riding | Washington, Spokane |
| Orrion Farms – Ellensburg, WA | Boarding Stable, Breeder, Coaches & Trainers | Washington, Ellensburg |
| Overlake Farm | Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson | Bellevue, Washington |
| Oxer Hill Farm | Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson | Snohomish, Washington |
| Pacific Moon Equestrian Center | Horseback Riding, Boarding Stable, Trail Rides | Washington, Arlington |
| Pacific Northwest Riding Academy | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Oak Harbor |
| Parkside Stables | Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson | Bellevue, Washington |
| Patterson Creek Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Trail Rides, Horseback Riding | Washington, Redmond |
| Patti Rides Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Trail Rides, Horseback Riding | Washington, Olympia |
| Pederson Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Gig Harbor |
| Peninsula Saddle Club | Boarding Stable, Coaches & Trainers, Equestrian Club, Riding Lesson | Washington, Long Beach |
| Phoenix Farm | Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson, Horseback Riding | Washington, Woodinville |
| Pinebar Ranch | Boarding Stable, Guest Ranch, Horseback Riding | Washington, Ellensburg |
| Polestar Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Lake Stevens |
| Polestar Farms | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Lake Stevens |
| Pond-A-Luce-A Stables | Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson, Horseback Riding | Washington, Auburn |
| Potcreek Meadow Farm | Boarding Stable | Redmond, Washington |
| Precision Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson | Lynnwood, Washington |
| Quarry Ridge Farms | Boarding Stable, Horse Show, Riding Lesson | Washington, Battle Ground |
| Queenside Stables | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Seattle |
| R&R Ranch | Guest Ranch, Horseback Riding, Boarding Stable | Washington, Benton City |
| R&R Ranch Horse Motel | Boarding Stable, Guest Ranch, Horseback Riding | Washington, Benton City |
| Raemy Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Mount Vernon |
| Ravenswood Farm | Boarding Stable, Coaches & Trainers, Horseback Riding | Washington, Issaquah |
| Ready to Ride | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Stanwood |
| Red Barn Arena | Boarding Stable, Coaches & Trainers, Riding Lesson | Long Beach, Washington |
| Red Barn Stables | Boarding Stable, Horseback Riding | Washington, Walla Walla |
| Red Feather Ranch – Trout Lake, WA | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Goldendale, Washington |
| Red Gate Farm Training | Boarding Stable, Coaches & Trainers, Horse Camps, Horseback Riding, Riding Lesson | Sammamish, Washington |
| Red Tree Stables | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Coupeville |
| Reid Sport Horses | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Monroe |
| Reiney Ridge Horsemanship | Riding Lesson, Boarding Stable, Coaches & Trainers | Washington, Ridgefield |
| Renick Reining Horses | Riding Lesson, Boarding Stable, Coaches & Trainers | Washington, Sultan |
| Rhodes River Ranch | Boarding Stable, Breeder, Coaches & Trainers, Riding Lesson | Washington, Arlington |
| River Canyon Equine Center | Boarding Stable | Washington, Clarkston |
| Rivermere Horse Boarding | Boarding Stable | Washington, Nine Mile Falls |
| RLT3 Ranch LLC | Boarding Stable | Washington, Lake Stevens |
| Road Runner Ranch | Boarding Stable, Guest Ranch, Horseback Riding | Washington, Bellingham |
| Rocking B Farms | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ridgefield |
| RockMeadow Equestrian Center | Boarding Stable, Coaches & Trainers, Horse Camps, Horseback Riding, Riding Lesson | Sammamish, Washington |
| Rolin Hill Quarter Horses | Boarding Stable, Riding Lesson, Horseback Riding | Washington, Ferndale |
| Roosters Stables | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Kennewick |
| Rosebud River Ranch | Boarding Stable, Guest Ranch, Horseback Riding | Washington, North Bend |
| Rossmeier Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Roy |
| Rusty Bar Ranch | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Roy |
| Sadie Kurtz | Boarding Stable, Riding Lesson, Coaches & Trainers | United States, Washington, Everson |
| Sage Meadows | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Redmond |
| San Sebastian Equestrian Center | Boarding Stable | Redmond, Washington |
| Sandamar Farm | Boarding Stable, Horseback Riding | Washington, Poulsbo |
| Saur Horse Training | Coaches & Trainers, Riding Lesson, Boarding Stable | Washington, Everson |
| Scatter Creek Training Center | Horseback Riding, Boarding Stable, Coaches & Trainers | Washington, Tenino |
| Seahorse Stables | Boarding Stable, Horseback Riding | Washington, Raymond |
| Seattle Farm | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Seattle |
| Seattle Polo & Equestrian Club | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Seattle, Washington |
| Seeklander Horse Training | Boarding Stable, Coaches & Trainers, Riding Lesson | Spokane, Washington |
| Sharkey Farm | Boarding Stable, Coaches & Trainers, Horse Show, Riding Lesson, Horseback Riding | Washington, North Bend |
| Shortacres Farm | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Battle Ground |
| Silver Aspen Ranch | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Enumclaw |
| Silver Buckle Ranch – Brush Prairie, WA | Boarding Stable, Horseback Riding | Vancouver, Washington |
| Silver Quarters | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Burlington |
| Silver Wings Ranch | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Ellensburg |
| Simon Horsemanship | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Auburn |
| Sky River Equestrian Center | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Sultan, Washington |
| Smokey Wood Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Redmond |
| Smokin Star Arena | Boarding Stable | Washington, Winlock |
| Son Rise Ranch | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Vancouver |
| Sorensen Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Kingston |
| Soundview Hunter Jumpers | Horseback Riding, Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Stanwood |
| Spokane Sport Horse Farm | Boarding Stable, Breeder, Coaches & Trainers, Horse Show, Horseback Riding | Washington, Spokane |
| Spokane Trail Rides | Boarding Stable, Riding Lesson, Trail Rides, Horseback Riding | Washington, Spokane |
| Stacey Lucko Dressage | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Bellevue |
| Starfire Farm | Boarding Stable, Riding Lesson, Horseback Riding | Washington, Tacoma |
| Stella’s Chance | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Battle Ground |
| Stokes Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Sultan |
| Stoneybrook Stables | Horseback Riding, Boarding Stable | Washington, Kent |
| Sue Hubbell Hunters and Jumpers | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Enumclaw |
| Sullivan Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Tacoma |
| Summit View Ranch | Boarding Stable, Horseback Riding | Washington, Graham |
| Sun Dun Ranch | Boarding Stable, Coaches & Trainers, Riding Lesson, Guest Ranch, Horseback Riding | Washington, Rockford |
| Sundance Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Woodinville, Washington |
| Sunshine Stables & Kennels | Boarding Stable | Washington, Pullman |
| Supercharge Performance Horses | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Spokane |
| Swanson Dressage | Boarding Stable, Coaches & Trainers, Horseback Riding | Washington, Redmond |
| Sylvan Farm | Horseback Riding, Boarding Stable, Breeder, Coaches & Trainers | Washington, Snohomish |
| Tashunka | Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson | Redmond, Washington |
| The Iron Horse Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Tacoma |
| The Red Horse Farm | Boarding Stable, Coaches & Trainers, Riding Lesson, Trail Rides, Horseback Riding, Horse Camps | Washington, Auburn |
| The Riding Place | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Port Orchard |
| The Rockin’ Z Ranch | Boarding Stable | Washington, Redmond |
| The Spokane Equestrian Center | Horse Show, Breeder, Hay Provider, Boarding Stable, Coaches & Trainers, Horseback Riding, Riding Lesson | Spokane, Washington |
| The Stables at Magnolia Ridge | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Monroe |
| Thumbs Up Farm | Coaches & Trainers, Horse Show, Riding Lesson, Horseback Riding, Boarding Stable | Washington, Redmond |
| TL2 Farms | Coaches & Trainers, Riding Lesson, Horseback Riding, Boarding Stable | Washington, North Bend |
| TNT Equestrian | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Coupeville |
| Topline Equestrian Centre | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Woodinville |
| Tri Cities Horse Trainer | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Richland |
| Trilogy Riding Centre | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Monroe |
| Trinity Ranch | Boarding Stable | Washington, Poulsbo |
| True North Equestrian Centre | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Snohomish |
| TulipSprings | Boarding Stable, Guest Ranch, Horseback Riding | Washington, Kennewick |
| Turtlehead Farm | Boarding Stable | Eastsound, Washington |
| Two Eyes Horsemanship Boarding | Boarding Stable, Coaches & Trainers | Washington, Spokane |
| Two Mountains Farm | Boarding Stable | Washington, Sammamish |
| Valhalla Stables | Boarding Stable | Vancouver, Washington |
| View Ridge Farm | Boarding Stable | Washington, Woodinville |
| Watermark Farm | Boarding Stable | Washington, Poulsbo |
| Wells Dressage | Coaches & Trainers, Horseback Riding, Boarding Stable | Washington, Stanwood |
| Western Sky Horsemanship | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Redmond |
| White Rock Performance Horses | Boarding Stable, Coaches & Trainers, Riding Lesson, Trail Rides, Guest Ranch, Horseback Riding | Washington, Omak |
| Whitethorn Farm | Boarding Stable, Coaches & Trainers, Riding Lesson | Washington, Bainbridge Island |
| Whitt Show Horses | Boarding Stable, Coaches & Trainers, Riding Lesson | Olympia, Washington |
| Whole Horse Healing | Equine Assisted Therapy, Equine Assisted Learning, Equine Bodywork, Boarding Stable, Coaches & Trainers | Washington, Woodinville |
| Willow Brook Farms – Oak Harbor, WA | Horseback Riding, Boarding Stable | Oak Harbor, Washington |
| Willowcest Stables | Horseback Riding, Boarding Stable, Trail Rides | Redmond, Washington |
| Willowcrest Stables | Boarding Stable, Trail Rides, Horseback Riding | Washington, Redmond |
| Winsum Acres | Riding Lesson, Myofascial release, Sports massage, Boarding Stable, Coaches & Trainers | Washington, Kennewick |
| Wonder Stables | Boarding Stable | Washington, Pullman |
| Woodbrook Stables and Events Center | Boarding Stable, Riding Lesson | Washington, Tacoma |
| Woodside Stables | Boarding Stable, Coaches & Trainers, Riding Lesson, Horseback Riding | Washington, Kingston |
