| Registered Name | Owner / Club | Status |
|---|---|---|
| Sidh Na Doodey | Aoife Lynch Boru's | Approved |
| Siena Finn | Marissa Weemen Killcarrick | Approved |
| Siena Finn Sparrow | Katie Black Abbeylands | Approved |
| Sierra Bay | Patricia Mulhall Mill Road | Approved |
| Signal Fire | Rachel Keogh South Roscommon | Approved |
| Silence | Sandra Cusack Dunamase | Approved |
| Silent Blue | Sarah Donnelly Ross House | Approved |
| Silent Picture (IRE) | Aisling Donoghue Corrib | Approved |
| Silent Surfer | Tomas Ryan Mill Road | Approved |
| Silken Touch | Julie Hazlett Milne Foxborough | Approved |
| Sillan Flash | Richard Hunter Killcarrick | Approved |
| Silly Billie Jean | Wendy O'Shea East Cork | Approved |
| Silogue Princeglitter | Maja Janson Annaharvey | Approved |
| Silvano Dazzling Diamond | Aisling Donoghue Corrib | Approved |
| Silver Berry | Alva Gunne Killcarrick | Approved |