| Equid | Horse Name ▲ | Breed | Age | Gender | Color | Discipline | Owner |
|---|---|---|---|---|---|---|---|
| 180211C | Iron Butterfly | Appaloosa | SY11 (17yo) | Mare | Bay Leopard | WW | Lissa |
| 310815C | Iron Heart | Irish Draught | SY15 (13yo) | Gelding | Grey | CC | Jewel |
| 325022B | Iron Man FRF | Morgan | SY22 (6yo) | Stallion | Palomino | DV | Rhianon |
| 182416C | Iron Wraith | Danish Warmblood | SY16 (12yo) | Stallion | Grey | CC | Soleil |
| 265014C | Ironbound | British Spotted Pony | SY14 (14yo) | Stallion | Chestnut Leopard | PR | Mariah |
| 377216C | Ironmark SW | Dutch Harness Horse | SY16 (12yo) | Stallion | Grey | SS | Soleil |
| 373915C | Irreplaceable | Morgan | SY15 (13yo) | Mare | Chestnut | SS | Rhianon |
| 309019C | ISeeUAndIHearU | American Mustang | SY19 (9yo) | Mare | Chestnut Sabino | TC | Morrigan |
| 335321C | Ishaan | Marwari | SY21 (7yo) | Stallion | Grey | TC | Manders |
| 105118B | Isidora | Cruzado | SY18 (10yo) | Mare | Amber Champagne | DG | Dani |
| 402518C | Isolde | Friesian | SY18 (10yo) | Mare | Black | DG | Faline |
| 427926B | It Was A Ghost | Thoroughbred | SY26 (2yo) | Mare | Black | FR | Morrigan |
| 520126C | It Was Aliens | Thoroughbred | SY26 (2yo) | Mare | Palomino Sabino | FR | Morrigan |
| 326621B | It's a Gig | Quarter Horse | SY21 (7yo) | Stallion | Palomino | EV | Rhianon |
| 372016C | Its the Law | Morgan | SY16 (12yo) | Stallion | Black | WE | Manders |
| 198415C | Itsa Me | Welsh Pony | SY15 (13yo) | Mare | Red Roan | HU | Morrigan |
| 524128B | Itsa Tithe Actually CR | Quarter Pony | SY28 (0yo) | Stallion | Blue Roan | WW | Morrigan |
| 245722C | Itza Scorcha | Quarter Horse | SY22 (6yo) | Mare | Chestnut | SR | Jewel |
| 316821B | Itziar Encantado | Friesian Sporthorse | SY21 (7yo) | Mare | Black | EV | Athene |
| 182616C | Ivory Phantom | Danish Warmblood | SY16 (12yo) | Mare | Grey | CC | Soleil |
| 269022B | Ivy Gang | Thoroughbred | SY22 (6yo) | Mare | Buckskin Rabicano | FR | Lissa |
| 404521B | Jaasvand | Marwari | SY22 (6yo) | Stallion | Palomino | EN | Niamh |
| 483227B | Jac Gonna Strike CR | Quarter Horse | SY27 (1yo) | Stallion | Chestnut | WW | Haley |
| 196115C | Jack and Coke | Appaloosa | SY15 (13yo) | Stallion | Bay Leopard | WW | Morrigan |
| 426826B | Jack On The House CR | Appaloosa | SY26 (2yo) | Stallion | Bay Roan Leopard | WW | Morrigan |
