| Name | Labels | City | State / Province |
|---|
| M Squared Dog Training | facilitytraining | Union Bridge | MD |
| M.A.D. Agility | equipment | | |
| MALNJACK | clubtraining | Windsor | ON |
| MK9 Dog Training - Maureen Koepp | clubfacilitytraining | Valdosta | Georgia |
| MSPCA - Boston | training | Boston | MA |
| MSPCA - Methuen | facilitytraining | Methuen | MA |
| Mad Dash Dogs | equipment | Phoenix | AZ |
| MadCo Agility | clubtraining | Charlottesville | VA |
| Madison Mutts Rescue and Training | facilityrentaltraining | Madison | WI |
| Manitowoc County Kennel Club | clubfacilitytraining | Manitowoc | WI |
| Mantayo Kennels & Dog School | facilitytraining | Lakewood | CO |
| Mark's Agility Equipment | equipment | Delta | OH |
| Marquee Agility | training | Norman | OK |
| MasterPeace Dog Training | facilitytraining | Franklin | MA |
| Matanuska Agility Canine Handlers | club | Matanuska | AK |
| Mattaponi Kennel Club | clubtraining | Manassas | VA |
| Max 200 | equipmentfacilityrentalstoretraining | Mentz | NY |
| McKay9 Dog Training | training | White Plains | NY |
| Me And My Dogs | equipmentfacilitystoretraining | Rising Fawn | GA |
| Medina Swarm Agility Club | clubfacilitytraining | Wadsworth | OH |
| Mega-Dogs | clubfacilityrentaltraining | Woodinville | |
| Merrimac Dog Training Club, Inc. | clubrentaltraining | Newport News | VA |
| Miami Obedience Club | club | Miami | FL |
| Mid-Hudson Kennel Association | club | | NY |
| Mighty Mutts Agility - Lisa Barrett | blogtraining | | |
| Mikamar Shetland Sheepdogs And All Breed Dog Training | facilitytraining | Palm Bay | Fl |
| Millennium Dog Sports | facilityrentaltraining | Casselman | ON |
| Milwaukee Dog Training Club Inc | facilitytraining | Milwaukee | WI |
| Miniature American Shepherd Club of the USA (MASCUSA) | club | | |
| Minnesota Agility Club | club | St Paul | MN |
| Minnesota Mixed Breed Club | club | | MI |
| Missy's Agility | blog | | |
| Mistys Dog Blog | blog | | |
| Mobile Bay Dog Training Club | clubfacilitytraining | Mobile | AL |
| Molly the Awesome Aussie | blog | | |
| Momentum Dog Sports - Hollister | facilityrentaltraining | Hollister | CA |
| Momentum Dog Sports - Moe Strenfel | facilityrentaltraining | San Jose | CA |
| Momentum Dog Sports - Woodside | facilityrentaltraining | Woodside | CA |
| Monster Meadows Dog Sports | facilityrentaltraining | Mineral | VA |
| Monterey Dog Training Club | clubtraining | Watsonville | CA |
| Montgomery Alabama Dog Obedience Club (MADOC) | clubtraining | Montgomery | AL |
| Morgan Hill Dog Sports | facilityrentaltraining | San Martin | CA |
| Morning Star Dog Academy | clubfacilityrentaltraining | Kingston | ON |
| Mountain View Dog Training | rentaltraining | Amissville | VA |
| Mountaintop Agility Dogs | facilitytraining | Conway (Mayflower) | AR |
| Mt Nittany Dog Training Club | clubfacilitytraining | Pennsylvania Furnace | PA |
| Much About The Mutt Blog | blog | | GA |
| Mudbug Farm Agility and Dog Training | facilitytraining | Murfreesboro | TN |
| Muddy Paws Canine Center | facilityrentalstoretraining | Westminster | VT |
| Muncie Obedience Training Club | clubfacilitytraining | Muncie | IN |
| Murfreesboro Obedience Training Club | clubfacilitytraining | Murfreesboro | TN |
| Muskegon Lakeshore Obedience Training Club | clubtraining | Muskegon | MI |
| Mutts and a Klutz | blog | Ottawa | ON |
| My Agility Journey | blog | | |
| My Hero Dog Training | equipmenttraining | Novi | MI |
| My K9 Buddy | facilityrentaltraining | Westminster | MD |
| My Life With Three Agility Shelties | blogvideo | | |
| manymuddypaws | blog | | AB |