| Name | Meaning | Gender | Origin |
|---|
| Reebok | | Male | Hebrew |
| Rex | after the Rex Banner character in The Simpsons cartoons | Male | Latin |
| Rhinestone | | Unisex | Hebrew |
| Rhodes | dweller by the crosses; roses | Male | Greek |
| Riches | | Unisex | Hebrew |
| Rider | horseman | Male | English |
| Ringo | apple, peace be with you | Male | English |
| Rio | River
| Male | Spanish |
| Rip | ripe, full grown | Male | Dutch |
| Ripple | | Unisex | Hebrew |
| Rocca | | Unisex | Hebrew |
| Rocket | To move swiftly and powerfully | Male | Word |
| Rocky | rest | Male | English |
| Rococo | | Unisex | Hebrew |
| Rodeo | | Unisex | Hebrew |
| Rooster | | Unisex | |
| Rover | A wanderer | Unisex | |
| Rufus | Red haired | Male | Latin |
| Runner | | Unisex | Hebrew |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Saber | | Unisex | |
| Saint | | Unisex | Hebrew |
| Salt | White crystals used as food seasoning. | Unisex | |
| Salty | | Unisex | Hebrew |
| Sambuca | Italian licquer made from elderberries and flavored with licorice. | Unisex | |