| Baby Name | Meaning | Gender |
|---|
| Rorry | Red. Sixteenth-Century Rebel Chief Rory O'more Is Celebrated In Irish Poetry. | Male |
| Rory | Red. Sixteenth-Century Rebel Chief Rory O'more Is Celebrated In Irish Poetry. | Male |
| Ros | Rose | Female |
| Ross | Red. Surname. | Male |
| Rourke | An Ancient Given Name Adopted As An Irish Clan Name. Surname. | Male |
| Rowan | From The Rowan Tree | Male |
| Rowen | Red Haired | Male |
| Rowin | Red Haired | Male |
| Rowland | Renowned In The Land. Roland Was A Legendary Hero Who Served Charlemagne. | Male |
| Rowyn | Red Haired | Male |
| Royan | Red-Haired: Red. | Male |
| Ruadhagan | Red Haired | Male |
| Ruadhan | Name Of A Saint Red Haired | Male |
| Ruaidhri | Famous Ruler Red | Male |
| Ruanaidh | Hero | Male |
| Russell | Fox | Male |
| Ryan | Kingly. | Male |
| Ryley | Island Meadow. | Male |
| Samuel | Asked Of God | Male |
| Scolaighe | Herald | Male |
| Scot | From Scotland: A Gael. Diminutive Of Scott. | Male |
| Scott | From Scotland | Male |
| Scully | Town Crier | Male |
| Seafra | Peace From God | Male |
| Seaghda | Majestic | Male |