| Equid | Horse Name ▲ | Breed | Age | Gender | Color | Discipline | Owner |
|---|---|---|---|---|---|---|---|
| 189914C | Sonic Vanguard | Paint Horse | SY14 (14yo) | Stallion | Buckskin Tobiano | WW | Morrigan |
| 453323B | Sonique M | Trakehner | SY23 (5yo) | Mare | Bay | EV | Soleil |
| 421223B | Sooner Eclipse | Thoroughbred | SY24 (4yo) | Mare | Chestnut Sabino | FR | Lissa |
| 245420C | Soothing Touch | Appendix Quarter Horse | SY20 (8yo) | Mare | Bay | SR | Jewel |
| 344122B | Soraya SLS | Criollo | SY22 (6yo) | Mare | Blue Roan | WW | Athene |
| 510025B | Soul Reaper LR | Quarter Horse | SY25 (3yo) | Stallion | Bay | WW | Rhianon |
| 251921C | Sound the Alarm | Appaloosa | SY21 (7yo) | Mare | Buckskin Blanket | WS | Morrigan |
| 252022C | Sounds Sus | Thoroughbred | SY22 (6yo) | Mare | Bay | FR | Lissa |
| 188314C | Soundwave | Holsteiner | SY14 (14yo) | Stallion | Chestnut | EV | The Orchard |
| 305220C | Sour Patch Kid SW | Holsteiner | SY20 (8yo) | Stallion | Bay | HU | Manders |
| 319521C | Sour Sassafras | Arabo Friesian | SY21 (7yo) | Mare | Black | CD | Athene |
| 532224B | South Soho FRF | Morgan | SY24 (4yo) | Mare | Bay | SS | Rhianon |
| 046512C | Southern Starlette | American Saddlebred | SY12 (16yo) | Mare | Bay Tobiano | JP | Manders |
| 492222C | Southport Coloratura | American Saddlebred | SY22 (6yo) | Mare | Chestnut | SS | Merry |
| 492321C | Southport Musette | American Saddlebred | SY21 (7yo) | Mare | Grey | SS | Merry |
| 320121C | Sovereign Lilac | Georgian Grande | SY21 (7yo) | Mare | Amber Champagne Tobiano | CD | Athene |
| 066921S | Sovereign Sky | Thoroughbred | SY21 (7yo) | Stallion | Grey White-Spotted | EV | Merry |
| 015811C | Sowing Dissent | Quarter Horse | SY11 (17yo) | Mare | Black | WR | Manders |
| 294117B | SoYouHaveASecretFamily | Thoroughbred | SY17 (11yo) | Mare | Bay | CC | Morrigan |
| 393523B | Space Lion CCR | Quarter Horse | SY23 (5yo) | Mare | Bay | WW | Merry |
| 294015C | Space Monkey | American Mammoth Donkey | SY15 (13yo) | Mare | Bay Roan | TC | Lissa |
| 090616S | Spaghetti Code | Quarter Pony | SY16 (12yo) | Stallion | Bay | HU | Lissa |
| 187012C | Spaghetti Legs | Shetland Pony | SY12 (16yo) | Mare | Flaxen Chestnut | PR | Lissa |
| 002315C | Spanish King | Andalusian | SY15 (13yo) | Stallion | Grey | DG | Manders |
| 037118B | Spanish Rum | Azteca | SY18 (10yo) | Mare | Bay | WE | Manders |
