| Scottish Contessa |
2011 Bay Sabino Clydesdale Mare |
Whitewood Inc |
| Sealing Secrets R |
2015 Bay Thoroughbred Mare |
Rueath acres |
| Selinda |
2010 Bay Nordic Draught Mare |
Vollmond Elite |
| Serendipity Bedrock |
2016 Bay Welsh Pony Stallion |
Serendipity Farms Incorporated |
| Shes So Soxy |
2009 Bay Thoroughbred Mare |
Aspen Creek Ranch |
| Sikánda van Nereus |
2021 Black Friesian Mare |
Rueath acres |
| Silverdale Agatha |
12 YO Bay tobiano Shetland Pony Mare |
Caelfall |
| Silverius |
2011 Black Wuerttemberg Stallion |
Rising Sun Stables |
| Simbolicly |
2009 Red Roan Clydesdale Stallion |
Whitewood Inc |
| Simply Platnum |
2013 Black Roan Welsh Cob Stallion |
Kiyo Performance Horses |
| Sinterklaas CCR |
2023 Chestnut Haflinger Stallion |
Cajun Cross Ranch |
| Sirens Wail |
2012 Bay Thoroughbred Mare |
Rueath acres |
| Sizzlin Cowboy Kadar |
2017 Black Tobiano Miniature Stallion |
Wrong Way Stud |
| Sjelevenn av Cajun |
2023 Gray Dun Norwegian Fjord Mare |
Cajun Cross Ranch |
| Skifra |
2026 Grullo North Swedish Horse Mare |
Wizzla |
| Skogfru |
2011 Bay North Swedish Horse Mare |
Whitewood Inc |
| Skogsra |
2013 Bay North Swedish Horse Mare |
Whitewood Inc |
| Skyggen |
2013 Bay Snowcap Knabstrupper Mare |
Red Rock Ranch |
| SmokesOnTheWater WI |
2010 Smokey Cream Miniature Horse Stallion |
Whitewood Inc |
| Snöflingans Emerald |
16 YO Grey Welsh Mountain Mare |
Gestüt Elwen |