| Reston | Place of rest or quiet refuge. |
| Reunan | A name meaning edge or boundary line. |
| Revateesh | A name meaning lord of the stars. |
| Revere | To show respect or admiration for someone or something. |
| Reydan | Strong and powerful, possibly derived from a Celtic word. |
| Reyden | Guardian of the people or protector of the community. |
| Reyel | God is my oath or promise to God. |
| Reyen | Strong and powerful, possibly derived from a Celtic word. |
| Rhaegar | Great leader or noble ruler, possibly from a Celtic or Welsh origin. |
| Rheal | To heal or cure, possibly derived from a Celtic word. |
| Rhen | Strong and powerful, possibly derived from a Celtic word. |
| Rhoades | From the road or path, possibly derived from a Celtic word. |
| Rhone | From the river or stream, possibly derived from a Celtic word. |
| Rhordan | Strong and powerful, possibly derived from a Celtic word. |
| Rhydian | From the valley or river, possibly derived from a Celtic word. |
| Rhyis | Wise or intelligent, possibly derived from a Celtic word. |
| Rhyland | From the land or territory, possibly derived from a Celtic word. |
| Rhymer | Poet or singer, possibly derived from a Celtic word. |
| Rhyne | A small stream or a flowing water path. |
| Riatt | Strong and powerful, possibly derived from a Celtic word. |
| Ricary | Leader or ruler, possibly derived from a Celtic word. |
| Rickyy | A powerful ruler |
| Rieden | Strong and powerful, possibly derived from a Celtic word. |
| Rigash | A person of great passion. |
| Rigasha | A soul filled with beauty. |
| Riggan | Ragn , judgment, decision, In Norse legend, Regin |
| Rilian | Derived from the Latin word for 'relating to the sea' |
| Ringerus | One who brings joyful sounds. |
| Riot | Uncommon given name possibly derived from the Latin 'rius' |
| Ripkin | English surname possibly derived from 'rip' meaning 'to tear' |
| Risaja | Born from the earths core. |
| Risara | A person who is pure and radiant. |
| Rishabdeep | The light of a superior leader. |
| Risindu | The bright light of the moon. |
| Risinu | One who brings great peace. |
| Risone | One who brings great joy. |
| Rithira | A person of pure virtue |
| Riv | A strong, flowing river. |
| Rivaille | Joining, adhesion |
| Riveen | A name meaning small river. |