| Name ▲ | Age | Gender | Owner | Actions |
|---|
| I'm Boallia | 1 | Filly | Lochiedo Stables | |
| I'm Infamous | 4 | Colt | Desert Wind Farm | |
| I've Got You Now | 1 | Colt | Black Briar Stables | |
| Ibelieveinfairies | 1 | Filly | Black Storm West | |
| Icarus' Flight | 1 | Colt | Black Briar Stables | |
| Ikeda-ya | 1 | Colt | Cricket Hill | |
| Imaginary Boatman | 1 | Filly | Starfish Stables | |
| Imagine Riches | 1 | Colt | Hidden Oak Farm | |
| Imagine That | 1 | Filly | Fair Isle Farm | |
| ImagineYoureMine | 1 | Filly | Sakura Springs | |
| Imagined Kiss | 1 | Colt | Sakura Springs | |
| Imperatrice | 1 | Filly | New Boston Stables | |
| Inattesa | 4 | Filly | Darkwood Stables | |
| IncantationOfLuck | 1 | Filly | Black Briar Stables | |
| Independence Star | 1 | Filly | Tall Oaks Farm | |
| Indy’s Thunder | 1 | Filly | Littlefield | |
| Ineffable | 1 | Filly | Cricket Hill | |
| Insane Victor | 1 | Filly | Starfish Stables | |
| Invierno | 1 | Filly | Denoux Stud | |
| Ipheion | 1 | Colt | Black Storm West | |