| Name | Meaning | Gender | Origin |
|---|
| Reese | ardor | Female | Welsh |
| Reg | Wise ruler | Unisex | English |
| Rex | after the Rex Banner character in The Simpsons cartoons | Male | Latin |
| Rhodes | dweller by the crosses; roses | Male | Greek |
| Rhys | ardor | Male | Welsh |
| Ricardo | dominant ruler | Male | Portuguese |
| Richard | powerful ruler; brave one | Male | |
| Rick | aka Richard, Dick and Little Man | Male | English |
| Rickie | Powerful, Brave Ruler | Unisex | English |
| Ricky | dominant or peaceful ruler | Male | English |
| Riley | courageous | Female | Irish |
| Robert | Famed: bright: shining. 14th-century King Robert the Bruce. Robert Burns the poet.
| Male | English |
| Robin | Famed: bright: shining Form of Robert popular since the medieval days of Robin Hood. Robinson: (English) Son of Robert Famed: bright: shining. Surname.
| Male | |
| Rocca | | Unisex | Hebrew |
| Rocco | rest | Male | Italian |
| Rock | Italian from German, rest | Male | English |
| Rocky | rest | Male | English |
| Rodney | after the character in the british sitcom Only Fools And Horses | Male | English |
| Roger | famous spearman, quiet | Male | |
| Rogers | | Unisex | |
| Roland | from the famous land | Male | |
| Rolf | Fame, Wolf | Unisex | German |
| Ron | Ronald | Unisex | |
| Ronan | a pledge | Male | Irish |
| Ronnie | Victorious | Unisex | English |