| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Royle | ROI-əl | English (Rare) | ||
| Royse | - | Medieval English | ||
| Royston | ROIS-tən | English (Rare) | ||
| Roz | RAHZ | English | ||
| Roza (1) | RO-zah (Russian) | Russian, Slovene, Bulgarian, Macedonian | ||
| Roza (2) | - | Ancient Germanic | ||
| Rozalija | - | Lithuanian, Slovene, Croatian, Macedonian | ||
| Rozanne | ro-ZAN | English | ||
| Rube | ROOB | English | ||
| Ruben | RUY-bən (Dutch) | Swedish, Norwegian, Danish, Dutch, French, Armenian, Biblical Latin | ||
| Ruby | ROO-bee | English | ||
| Rubye | ROO-bee | English | ||
| Rudesind | - | Ancient Germanic | ||
| Rudolf | ROO-dawlf (German), RUW-dawlf (Polish) | German, Dutch, Swedish, Norwegian, Danish, Polish, Czech, Hungarian, Slovene, Croatian, Russian, Arm | ||
| Rudolph | ROO-dahlf | English |