| Name | Meaning | Gender | Origin |
|---|
| Robbin | Famed: Bright: Shining Form Of Robert Popular Since The Medieval Days Of Robin Hood. Robinson: (English) Son Of Robert Famed: Bright: Shining. Surname. | Unisex | English |
| Rogue | | Unisex | Hebrew |
| Rosie | Rose | Female | Latin |
| Roxy | Star | Female | Persian |
| Roz | Weak, tender or soft horse | Female | Germanic |
| Ruby | Red | Female | Latin |
| Rusty | Rusty, full of rust | Unisex | American English |
| Sabre | | Unisex | Hebrew |
| Sadie | Princess | Female | Hebrew |
| Salem | Secure, peace | Unisex | Arabic |
| Sally | Princess | Female | Hebrew |
| Sammy | His name is God | Unisex | Hebrew |
| Sasha | Defending men | Unisex | Greek |
| Sassy | Lively and spirited | Unisex | English |
| Scooter | One who goes suddenly and speedily. | Unisex | English |
| Scout | Observer | Unisex | American English |
| Shadow | Shadow | Unisex | English |
| Sheba | Daughter of an oath | Female | Hebrew |
| Shelby | A place where willows grow | Female | American English |
| Shilo | Gift for him | Unisex | Hebrew |
| Shirley | Bright grassland | Female | English |
| Simba | Lion | Female | Swahili |
| Smoky | | Unisex | Hebrew |
| Snowflake | Single flake or crystal of snow. | Unisex | English |
| Sophie | Wisdom | Female | Greek |
| Sparky | Animated, lively. | Unisex | English |
| Speranza | Hope | Female | Italian |
| Sprite | Lemonade flavored soft drink. | Unisex | English |
| Stella | Star | Female | Latin |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | English |