| Equid | Horse Name ▲ | Breed | Age | Gender | Color | Discipline | Owner |
|---|---|---|---|---|---|---|---|
| 087914C | Maru | American Mustang | SY14 (13yo) | Stallion | Palomino | EN | Shanny |
| 308224B | Marvel SW | Danish Warmblood | SY24 (3yo) | Mare | Bay | JP | Morrigan |
| 170313C | Marvelous | British Warmblood | SY13 (14yo) | Stallion | Perlino Tobiano | EV | Lissa |
| 078317B | Mary | Friesian | SY17 (10yo) | Mare | Black | DV | Lissa |
| 408122B | MaryLou Varta M | Hanoverian | SY22 (5yo) | Mare | Chestnut | EV | Manders |
| 088913S | Mastermind | Arabian Pony | SY13 (14yo) | Gelding | Grey | HU | Morrigan |
| 144418C | Masterpiece | Swedish Warmblood | SY18 (9yo) | Mare | Grey | CC | Lorelei |
| 364013C | Mate Amargo | Criollo | SY13 (14yo) | Stallion | Buckskin | WW | Jewel |
| 008912C | Material Girl | Quarter Horse | SY11 (16yo) | Mare | Buckskin | WW | Merry |
| 011815C | Mathias | Knabstrupper | SY15 (12yo) | Stallion | Bay Leopard | DG | Merry |
| 154611C | Matoaka | Appaloosa | SY11 (16yo) | Mare | Bay Blanket | EN | Manders |
| 007218C | Matrim | Irish Sport Horse | SY18 (9yo) | Stallion | Black Tobiano | EV | Morrigan |
| 342521B | Mausekoenig Blue | Brandenburger | SY21 (6yo) | Stallion | Bay | JP | Merry |
| 201714C | Mauvessence | Knabstrupper | SY14 (13yo) | Mare | Bay Near Leopard | JP | Merry |
| 073621S | Maverick | German Riding Pony | SY21 (6yo) | Stallion | Grey | DG | Manders |
| 491616C | Maxamillian | American Mustang | SY16 (11yo) | Stallion | Black | EN | Rhianon |
| 267322B | Maximum Problems | Thoroughbred | SY22 (5yo) | Mare | Buckskin Sabino Overo | FR | Lissa |
| 321218C | Maxine Dun Freckles | Quarter Horse | SY18 (9yo) | Mare | Palomino | WR | Manders |
| 217322B | May Day | Quarter Horse | SY22 (5yo) | Mare | Bay | SR | Izabella |
| 489127B | May Death Never Stop You | Thoroughbred | SY27 (0yo) | Mare | Bay | FR | Morrigan |
| 330521B | May Queen | Thoroughbred | SY21 (6yo) | Mare | Black | EV | Morrigan |
| 263124B | Maybe I Like Lettering CR | Appaloosa | SY24 (3yo) | Mare | Grulla Near Leopard | SR | Morrigan |
| 362922B | Maybe It's Neighbelline | Irish Cob | SY22 (5yo) | Mare | Silver Black | DV | Soleil |
| 229917C | Maybe Marlene | Hackney Pony | SY17 (10yo) | Mare | Bay | SS | Merry |
| 153718C | Mayday | Danish Warmblood | SY18 (9yo) | Mare | Grey | CC | Shanny |
