| Equid | Horse Name ▲ | Breed | Age | Gender | Color | Discipline | Owner |
|---|---|---|---|---|---|---|---|
| 166111C | Opulence | Arabian Pony | SY11 (17yo) | Mare | Chestnut | EV | Lissa |
| 498424B | Oracle SW | Holsteiner | SY24 (4yo) | Mare | Chestnut | EV | Lorelei |
| 205722C | Orange Odyssey | Quarter Horse | SY22 (6yo) | Stallion | Chestnut | SR | Jewel |
| 125413C | Orange U Glad I Didnt Say Banana | Knabstrupper | SY13 (15yo) | Mare | Palomino Leopard | EV | Jen |
| 331521B | Orbital | Thoroughbred | SY21 (7yo) | Mare | Grey | CC | Lorelei |
| 270622B | Oregon Optics | Thoroughbred | SY22 (6yo) | Mare | Grey Overo | FR | Lissa |
| 148013C | Oregon Trail | Thoroughbred | SY13 (15yo) | Mare | Palomino | CC | Lissa |
| 327119C | Oriol | Hispano Arabe | SY19 (9yo) | Stallion | Grey | WE | Athene |
| 313322C | Orpheus | Thoroughbred | SY22 (6yo) | Stallion | Smoky Cream | EV | Morrigan |
| 514924C | ORS Chickenfried | Zangersheide | SY24 (4yo) | Mare | Bay Roan Tobiano | JP | Jojo |
| 517223C | ORS QuaintInADress | Zangersheide | SY23 (5yo) | Mare | Bay Roan | JP | Jojo |
| 513224C | ORS QuietAsAMouse | Zangersheide | SY24 (4yo) | Mare | Black Tovero | JP | Jojo |
| 513324C | ORS SquirrelInChurch | Zangersheide | SY24 (4yo) | Stallion | Brown | JP | Jojo |
| 517124C | ORS StandingInTheMoonlight | Zangersheide | SY24 (4yo) | Mare | Black | JP | Jojo |
| 483817C | Oskar | Arabian | SY17 (11yo) | Stallion | Grey | EN | Lorelei |
| 165119C | Osmosis | Connemara | SY19 (9yo) | Stallion | Palomino | DG | Lissa |
| 155518C | Ostara | Lusitano | SY18 (10yo) | Mare | Grey | WE | Merry |
| 314321C | Ourense | Andalusian | SY21 (7yo) | Stallion | Black Pearl | WE | Athene |
| 108820B | Out Of Order | Thoroughbred | SY20 (8yo) | Mare | Grey Sabino | FR | Lissa |
| 141921C | Outback Legend | Thoroughbred | SY21 (7yo) | Stallion | Bay | FR | Jewel |
| 148313C | Outlaw | Thoroughbred | SY13 (15yo) | Stallion | Black | CC | Lissa |
| 413622B | Outlaw Candy | Thoroughbred | SY23 (5yo) | Mare | Silver Bay Sabino Overo | FR | Lissa |
| 225521B | Outta Cavities | Appaloosa | SY21 (7yo) | Mare | Buckskin Roan Blanket | SR | Lissa |
| 426126B | Outta Everythin CR | Quarter Horse | SY26 (2yo) | Mare | Chestnut | WW | Morrigan |
| 177211C | Outta My Cloud | Appaloosa | SY11 (17yo) | Mare | Red Roan Blanket | WS | Lissa |
