| Name | Meaning | Gender | Origin |
|---|
| Pilot | | Male | |
| Powers | | Male | |
| Radar | | Male | |
| Rags | | Male | |
| Ranger | dweller in the field A warden employed to protect a forest area. | Male | |
| Ransom | son of the shield; redeemer | Male | English |
| Rebel | One that resists of defies authority | Male | Word |
| Richard | powerful ruler; brave one | Male | |
| Rip | ripe, full grown | Male | Dutch |
| Robert | Famed: bright: shining. 14th-century King Robert the Bruce. Robert Burns the poet.
| Male | English |
| Rocket | To move swiftly and powerfully | Male | Word |
| Roger | famous spearman, quiet | Male | |
| Romeo | pilgrim to Rome | Male | Italian |
| Ronin | Samurai without a master | Unisex | |
| Ross | from the TV sitcom Friends | Male | Scottish |
| Sailor | One who serves in the navy or works on a ship. | Male | Occupational |
| Sam | to hear | Male | English |
| Samuel | his name is God | Male | Hebrew |
| Sarge | Noncommissioned Army or Air Force rank | Male | |
| Scout | One dispatched from main body to gather information | Male | Word |
| Sergeant | to serve | Male | Latin |
| Sheridan | The Wild Man | Male | Irish |
| Sherman | wool cutter | Male | English |
| Shooter | Waylon Jennings' Sons Name Is Shooter. | Male | User Contributed |
| Sinbad | | Male | |