| Equid | Horse Name ▲ | Breed | Age | Gender | Color | Discipline | Owner |
|---|---|---|---|---|---|---|---|
| 453621C | Sir Wallace | Shire | SY21 (7yo) | Stallion | Grey | DV | Soleil |
| 421723B | Siren Glow | Thoroughbred | SY24 (4yo) | Mare | Cremello Sabino | FR | Lissa |
| 361198B | Siroy Kumudinee | Marwari | SY20 (8yo) | Mare | Palomino | TC | Niamh |
| 072215S | Sister Ire | Irish Sport Horse | SY15 (13yo) | Mare | Chestnut | EV | Morrigan |
| 379819C | Sister June | Carolina Marsh Tacky | SY19 (9yo) | Mare | Bay | WE | Manders |
| 479321C | Sitara | Marwari | SY21 (7yo) | Mare | Bay | TC | The Orchard |
| 089416S | Sitting Duck | Irish Sport Horse | SY16 (12yo) | Gelding | Chestnut | HU | Morrigan |
| 013114C | Siuan | Irish Draught | SY14 (14yo) | Mare | Chestnut | HU | Morrigan |
| 429525C | Sivekar | Arabian | SY25 (3yo) | Mare | Grey | AR | Morrigan |
| 368920B | Six of Wands CCR | Quarter Horse | SY20 (8yo) | Stallion | Chestnut | WW | Merry |
| 239922C | Sk8ter Boi | Thoroughbred | SY22 (6yo) | Stallion | Buckskin | EV | Morrigan |
| 327421B | Skeptic M | Thoroughbred | SY21 (7yo) | Mare | Bay | CC | Merry |
| 035618B | Skinny Latte | Connemara | SY18 (10yo) | Mare | Grey | JP | Manders |
| 321016C | Skippers Passion Twist | Quarter Horse | SY16 (12yo) | Stallion | Grey | WR | Manders |
| 382721C | Skr | Arabian | SY21 (7yo) | Stallion | Flaxen Chestnut | EN | Sioux |
| 299913C | Skylayla | American Mustang | SY13 (15yo) | Mare | Black Tobiano | EN | Manders |
| 474922S | Slainte | Connemara | SY22 (6yo) | Stallion | Red Dun | JP | Lorelei |
| 183714C | Sleep Token | Danish Warmblood | SY14 (14yo) | Stallion | Black | EV | The Orchard |
| 133016C | Sleeping Beauty | Thoroughbred | SY16 (12yo) | Mare | Bay | CC | Morrigan |
| 276617C | Sleeping Dynamite | Dales Pony | SY17 (11yo) | Stallion | Bay | HU | Manders |
| 193715C | Sleepy Hollow | Holsteiner | SY15 (13yo) | Stallion | Bay | CC | The Orchard |
| 473421S | Sleigh My Name | Quarter Horse | SY21 (7yo) | Mare | Grulla | WW | Soleil |
| 372525B | Slick Chrome American Prince | Thoroughbred | SY25 (3yo) | Stallion | Bay | FR | Morrigan |
| 296921C | Slick Wilma | Quarter Horse | SY21 (7yo) | Mare | Grey | WW | Manders |
| 409719B | Slightly Batty CCR | Quarter Horse | SY19 (9yo) | Mare | Buckskin | WW | Soleil |
