| Registered Name | Owner / Club | Status |
|---|---|---|
| Thunderbar | Fiona Collins Meath | Approved |
| Thunderburd | Ruth Prenderville Foxborough | Approved |
| Thundering Tina | Sarah Barry Horetown | Approved |
| Thy Will Be Dun | Lisa Rothwell Coole Lane | Approved |
| Thyne Will Tell | Sue Corish Carne | Approved |
| Ti Amo Darcy | Aisling McGrath Corrib | Approved |
| Tia After Dark (IRE) | Susan Maher Mullingar | Approved |
| Tia Coupe | Diane Carslake Mullingar | Approved |
| Tia French Flower | Aimee Murray Foxborough | Approved |
| Tia Hill of Down | Caoilfhionn Rynne Abbeylands | Approved |
| Tia Maria Moshaajir | Paddy Quinn Killcarrick | Approved |
| Tias Choice | Geraldine Gaul Cheval | Approved |
| Tibbs | Lorna Davenport Foxborough | Approved |
| Tickedy-Boo | Daire Diver Stracomer | Approved |
| Tickle Time | Dearbhle Creagh Benbulben | Approved |