| Registered Name | Owner / Club | Status |
|---|---|---|
| Thorndale Elizabeth | Karen Gibney Copperfield | Approved |
| Thorndale Melody | Louise Lynn Foxborough | Approved |
| Thornfield Dubh | Danielle Murphy Arderin | Approved |
| Thornfield Flo | Mary McMahon Benbulben | Approved |
| Thornfield Isabelle | Lawrence Raftery South Roscommon | Approved |
| Thornfield Roe | Christina Knowles Cheval | Approved |
| Thornhill Cinderella | Jacqui Boland Killossery | Approved |
| Thornhill Pippa | Amy Bourke Boru's | Approved |
| Thornton Tiny Dancer | Siobhan O'Hara Foxborough | Approved |
| Three Amigos | Christine Moore Killossery | Approved |
| Three Colours Gold | Roslyn McConnell Tynagh | Approved |
| Three Girls And A Dolly | Lydia Bentley Mo Chara | Approved |
| Thrill Hill | Joann Maher Devils Bit | Approved |
| Thullanoone Ted | Andrea Doolan Highland Lodge | Approved |
| Thullnanoone Darragh | Aisling Faherty Westport | Approved |