| Rooridha | Brilliant; Black of Diamond; Beauty of Love; Spring; Green is New |
| Roos | A name meaning rose flower. |
| Roose | From the Rose Bush; Old English for Rose |
| ROOSEVELT | from the rose field |
| Roothvik | A name meaning a priest or sage. |
| Rootra | A name meaning a fierce warrior. |
| Rootvu | A name meaning a vision or sight. |
| Rooyi | A name meaning a face or visage. |
| Roozbah | A name meaning a lucky day. |
| Roozbeh | A name meaning a fortunate soul. |
| Ropa | A name meaning silver or wealth. |
| Roper | A name meaning a rope maker. |
| Roque | A name meaning a place of rest. |
| Rorey | Red. Sixteenth-century rebel chief Rory O'More is celebrated in Irish poetry. |
| Rori | A name meaning a redhaired king. |
| Rorie | Derived from the Gaelic for red king. |
| Rorik | A name meaning famous ruler or king. |
| Rorke | Derived from the Gaelic for red king. |
| Rorric | A name meaning famous, powerful ruler. |
| Rorry | Red. Sixteenth-century rebel chief Rory O'More is celebrated in Irish poetry. |
| RORY | A name meaning the redhaired king. |
| Ros | From the peninsula |
| Rosa | Noted protector |
| Rosabel | Variant of Rose: Rose |
| Rosabela | A name meaning beautiful rose flower. |
| Rosabella | Variant of Rose: Rose |
| Rosabelle | Variant of Rose: Rose |
| Rosalba | A name meaning white rose of beauty. |
| Rosalee | Rose Blossom; Rose; Rose Garden |
| Rosaleen | Variant of Roisin: Little Rose |
| Rosalia | A name meaning a garland of roses. |
| ROSALIE | A name meaning a garden of roses. |
| Rosalina | A name meaning a beautiful rose bud. |
| Rosalind | A name meaning gentle horse. |
| Rosalinda | A name meaning pretty rose. |
| Rosalinde | A name meaning soft horse. |
| Rosaline | A name meaning fair rose. |
| Rosalyn | A name meaning lovely rose. |
| Rosamaria | A name meaning rose of Mary. |
| Rosamond | Variant of Rosamund: Noted protector; horse protector. |