| Name ▲ | Age | Gender | Owner | Actions |
|---|
| Ita | 0 | Filly | Lochiedo Stables | |
| Italian Desserts | 0 | Filly | Black Briar Stables | |
| Italian Princess | 0 | Filly | Tall Oaks Farm | |
| Iynx | 0 | Filly | Generous Bloodstock | |
| I’m Your Legacy | 0 | Filly | Tall Oaks Farm | |
| JAG | 3 | Colt | Desert Wind Farm | |
| Jack Tar | 0 | Colt | Dreadnought | |
| Jaguar | 0 | Filly | New Boston Stables | |
| Je m’appelle Joey | 0 | Filly | Generous Bloodstock | |
| Jenny De | 0 | Filly | Gintara Lodge | |
| Join the Dark Side | 0 | Filly | Black Briar Stables | |
| Joseon Prince | 0 | Colt | New Boston Stables | |
| Juilliard | 0 | Colt | Denoux Stud | |
| Julius Ceazar | 0 | Colt | Tall Oaks Farm | |
| Jurassic Coast | 0 | Colt | Generous Bloodstock | |
| Just Crows to You | 0 | Filly | Cricket Hill | |
| Just My Soul | 0 | Filly | Clicker Lab | |
| Just Relax | 0 | Colt | Hidden Oak Farm | |
| Just To Make Bliss | 0 | Colt | Clicker Lab | |
| Justification | 0 | Filly | Tall Oaks Farm | |