- Iverson's Boarding Stables
- J & A Ranch
- J & J Stables
- J & L Farm
- J Benson Ranch Riding Stables
- J C Bar Ranch
- J P's Bacacita Farms
- J P's Bacacita Farms
- J Walking Stables
- J's Eden Riding Stables
- Jac-O-Mar Stables
- Jackson Country Outfitters
- Jackson Equestrian Centre
- Jackson Hole Trail Rides
- Jacobs Training Stables
- Jafco Portable Horse Stalls
- JAK Stables
- Jalin Acres
- James Quarter Horses
- James Quarter Horses
- James W Bond's Stables
- James W Bond's Stables
- James' Gang Ranch
- Jas Ponies-Rides & Day Camp
- Jay Pitcher Racing Stables
- Jeff King Stables Inc
- Jeff Warring Racing Stables
- Jeff Warring Racing Stables
- Jeffrey Allen's Racing Stable
- Jen Mar Arabians
- Jenny Lake Lodge
- Jes De Vinners Stables
- Jesse's Livery Stables
- Jesse's Livery Stables
- Jesus Maria Ranch
- Joe Fleming Stables
- John Elrod Horseshoeing
- John Puckett Stables
- John's River Ranch
- Johnson Farms
- Jones Mountain View Saddlebred
- Jordan Hollow Riding Stable
- Jorgenson Enterprises
- Joseph R Davis Stables
- Journey's End Farm
- Journey's End Farm
- Journey's End Farm & Riding
- Ju Ro Stables
- Jumping G Equestrian Ctr ILC
- K & D Stables
- K & D Stables
- K G Boarding Ranch
- Kairos Equestrian Ctr
- Karen's Quarter Horse Ranch
- Katas Jawis Stables
- Katie Monahan Inc
- Kearsley Arabians
- Kedron Valley Stables
- Keezlenutten Farm
- Keith Farms
- Kelly Park Stables
- Kemo-Sabe Stables
- Kemo-Sabe Stables
- Kennedy Horse Ranch & Stables
- Kenrock Equestrian Ctr Inc
- Kesler Corp
- Keswick Carriage Co
- Kettle Moraine Ranch
- Keystone Stables
- Kilfinnan Stables
- Kim's Pony Rides
- Kimberden Farms
- King Farm Riding Stable
- Kings Grove Stables
- Kinni Valley Riding Academy
- Kinsey Paint & Quarter Horses
- Kinswood Farms
- Kinswood Farms
- Kirkwood Stables
- Klassy Time Arabians
- Klassy Time Arabians
- Klear Mont Farms
- Kline View Stables
- Knick Knacks Horseback
- Koco Ranch
- Kokopelli Stables
- Kokopelli Stables
- KOTA Farm
- KOZY Knights Boarding Stables
- KOZY-Manor Stables
- Krazy K Farm
- Krazy K Stables
- Kurtz Corral Riding Stable
- L & R Ranch
- L & R Ranch
- L A Stables
- L J Arena Stalls & Party Barn
- LA Bella Luna Stables
- LA Fleur Van Ess Stables
- LA Grange Farm & Tack
- LA Remuda Saddle Club
- LA Tierra Del Caballo
- Lajitas Stables
- Lajitas Stables Fort Davis
- Lajoie Stables
- Lake Hart Equestrian
- Lake Livingston Stables
- Lake Prince Farm
- Lake Raven Stables
- Lakedrive Stables
- Lakefield Farm LLC
- Lakeside Stables
- Lakota Farm & Ranch Buildings
- Lance Hayes Stables
- Landmark Farms
- Lane Leverette Stables
- Lang's Horse & Pony Farm
- Laredo Riding Stables
- Last Nickel Ranch
- Laurel Springs Farm
- Lavas Terra Firma Equestrian
- Lavas Terra Firma Equestrian
- Lawley Wakelin Bloodstock Inc
- Lawrence Gluff Jr
- Lay's Stables
- Lazy A Ranch & Stables
- Lazy J Farm
- Lazy Kv Arena
- Lazy MD Arabians Sterling
- Lazy S Rides Stables
- Lazy S Rides Stables
- Lazy S Stables
- Leaning Pine Stables
- Ledgeview Acres
- Legacy Farms
- Legacy Stables
- Leigh-Land Stables
- Lewis River Stables
- Lewis River Stables
- Liberty Bell Farms
- Liberty Hill Farm
- Liberty Hill Farm
- Liberty Meadows
- Liberty Stables
- Light House Stables
- Lighthorse Farm Equestrain Ctr
- Lignite Stables LTD
- Lillie Acres Ranch
- Limited Editions Stables
- Linda Lou Stables Inc
- Linda Lou Stables Inc
- Lindinhoff
- Lisa Doczi
- Lisa Sharer's Equestrian Stbls
- Little Bear Ranches
- Little Bull Run Farm
- Little Cayuse Ranch
- Little River Farm
- Little Scotts Tree Care
- Live Oak Farm
- Live Oak Stables
- Live Oak Stables
- Lively's Livery
- Livery Stable
- Livery Stables
- Living Dreams Farm
- Living Dreams Farm
- Locust Hill Farms
- Lone Star Bed & Bale
- Lone Star Stables
- Lone Star Stables
- Lone Star Stables
- Lonesome Pine Equestrian Ctr
- Lonesome Pine Equestrian Ctr
- Long Branch Stables
- Long Creek Equestrian Ctr
- Long Hollow Farms
- Longacre Stable Schl-Hrsmnshp
- Longacre Stable Schl-Hrsmnshp
- Longview Farm
- Lost Creek Equestrian Ctr
- Lost Mountain Ranch
- Lost Mountain Ranch
- Lost Wells Stables
- Lost Wind Livery/Lh7 Ranch
- Low Country Equestrian Ctr
- Lucia Farm
- Lucia Farm
- Lucky 13 Stables
- Lucky 13 Stables
- Lucky Acres Stables
- Ludlow Carriage
- Lunarosa Stables
- Lwm Stables LLC
- Lynfield Farm
- Lynnleigh Farm
- Lyon's & Horses
- Lz Ranch Horseback Tours
- M & K Ranch Inc
- M & M Enterprises
- M & M Enterprises
- M K Quarter Enterprises
- M Terry Stables
- M Terry Stables
- M-M Horsecenter
- M-M Horsecenter
- M/T Horse Equine Svc
- Mac Gregor Stables
- Mac Rae Performance Horses
- Mac Training Stables
- Mack Hess Stables
- Mad River Stables
- Madison Dressage Lesson
- Madrone Ranch Stables
- Magic Carousel Stables LLC
- Magnolia Acres Farm & Stables
- Magnolia Farm & Stables
- Magnolia Meadows LLC
- Majestic Meadow Stables
- Mandy L Morrison
- Manor Equestrian Ctr
- Maple Corner Farm
- Maple Crest Farm
- Marcos' Stables
- Marcos' Stables
- Marine Creek Stables
- Mark Berchtold Farrier Inc
- Marmora Stables
- Marrinson Stables
- Marshall Creek Ranch
- Marshall Creek Ranch
- Marshland Equestrian Ctr
- Marshland Equestrian Ctr
- Martex Farms
- Martin Rae Stables
- Martin Stables
- Martin Stables
- Martin Stables
- Mazza Horse Svc
- Mc Arthur Quarter Horses
- Mc Carty Farms
- Mc Coy Stables Inc
- Mc Fadden Farm
- Mc Fatridge Quarter Horses
- Mc Kinney Stables
- Mc Kinney Stables
- Mc Kinney Stables
- Mc Nutt Farm
- Mc Quay Stables Inc
- MDM Quarter Horses Palominos
- MDM Quarter Horses Palominos
- Mead Stables
- Mead Stables
- Meadow Dream Farm
- Meadow Green Stables
- Meadow Lane Stables
- Meadow Ridge Farms
- Meadow Run Equestrian Ctr
- Meadow Wood Stable
- Meadowbrook Equestrian Ctr
- Meadowchase Farm
- Medicine Horse Stables
- Medicine Horse Stables
- Melody Acres Miracles At Work
- Melody T Farms Inc
- Melville Training Stables
- Memorial Park Hunters Inc
- Memorial Park Hunters Inc
- Mercer Springs Farm
- Meridian Equine Ctr
- Merlin Farms Equestrian Ctr
- Merlin Farms Equestrian Ctr
- Mesa Vista Farm-Boarding
- Meter Meadows Stables
- Mickey Mc Cormick Stables
- Middle Creek Riding Stables
- Middle Creek Stables & Horse
- Midland Equestrian Ctr LLC
- Mike Mc Cormick Stables
- Mike Turner Stables
- Miles To Go Farm
- Milestone Farms LLC
- Mill Creek Farm
- Mill Creek Stables
- Miller Farm Horse Boarding
- Miller Hollow Equestrian Ctr
- Miller Shavings
- Millercrest Stables
- Millington Stables
- Milliron TJ Outfitting Inc
- Miss Paula's Arts & Music Std
- Misty Hills Farm
- Monteagle Stables
- Monty Turnbow Training Stables
- Moon A Kiss Farm Stables Barn
- Moonlight Stables
- Moonraker Equestrian Academy
- Moreland Quarter Horses
- Morgan Creek Stables
- Moss Creek Equestrian Ctr
