| Reuben | - | Biblical Name | Reuel | - | Biblical Name |
| Reuven | - | Yiddish Name | Revanth | - | Hindu Name |
| Revik | - | Eskimo Name | Rex | - | United States Name |
| Rey | - | Philippines Name | Reyhan | - | Algerian Name |
| Reynaldo | - | Philippines Name | Reynier | - | Philippines Name |
| Reynir | - | Icelandic Name | Reynold | - | United States Name |
| Reza | - | Muslim Name | Rezin | - | Biblical Name |
| Reznik | - | Czechoslovakian Name | Rezon | - | Biblical Name |
| Rheagan | - | Irish Name | Rhett | - | Welsh Name |
| Rhodes | - | Greek Name | Rhylee | - | Irish Name |
| Rhys | - | Welsh Name | Rialik | - | Eskimo Name |
| Rian | - | United States Name | RIAZ | - | Muslim Name |
| Ribai | - | Biblical Name | Riblah | - | Biblical Name |
| Rica | - | Romanian Name | Ricardo | - | Spanish Name |
| Rich | - | United States Name | Richard | - | Biblical Name |
| Richel | - | Cameroon Name | Richie | - | United States Name |
| Rick | - | United States Name | Rickey | - | United States Name |
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