| Registered Name | Owner / Club | Status |
|---|---|---|
| Zantino | Niamh Brady Cheval | Approved |
| Zaquito (SWB) | Val Joy Winterdown | Approved |
| Zara | Sean Kavanagh Kilmacredock | Approved |
| Zara Di Galloway | Alan Trautt Springmount | Approved |
| Zara Go Lightly | Fiona Horrigan Ballinasloe | Approved |
| Zara-O | FINTAN O' FLYNN Corrib | Approved |
| Zaras Zodiacal Light | Ellie O'Neill Thomastown and District | Approved |
| Zaristo | Sheila Fuller Cill Dara | Approved |
| Zazu Van Terhofstede | Suzi Connole Foxborough | Approved |
| Zebe D Rover | Renee Patience Westport | Approved |
| Zebidee | Julie Mullarky Castle Leslie | Approved |
| Zebo | Wendy Cooney Tara Hill | Approved |
| Zee | Tara Louise Creighton Foxborough | Approved |
| Zeedam De Royale | Conrad McGuinness Gap of the North | Approved |
| Zephyr | Naomi Fisher Foxborough | Approved |