| Name | Meaning | Gender | Origin |
|---|
| Quincy | Fifth | Male | Latin |
| Raja | Anticipation | Female | Arabic |
| Ralph | Wolf council | Male | Germanic |
| Rascal | One that is playfully mischievous | Unisex | English |
| Raymond | Advice | Male | Germanic |
| Reuben | Behold, a son | Male | Hebrew |
| Rico | Strong power | Male | French |
| Riley | Rye clearing | Male | English |
| Rina | Pet form of names in -rina | Female | English |
| Ringo | Apple, peace be with you | Male | English |
| Ripley | Separate | Male | English |
| Rocky | Battle cry | Male | Germanic |
| Rosie | Rose | Female | Latin |
| Roxy | Star | Female | Persian |
| Sadie | Princess | Female | Hebrew |
| Sam | He is called god | Male | Hebrew |
| Sammy | His name is God | Unisex | Hebrew |
| Samson | Sun | Male | Hebrew |
| Sandy | Defending men | Male | Greek |
| Sasha | Defending men | Unisex | Greek |
| Sassy | Lively and spirited | Unisex | English |
| Shadow | Shadow | Unisex | English |
| Sheba | Daughter of an oath | Female | Hebrew |
| Shelby | A place where willows grow | Female | American English |
| Shorty | Of less than average size | Unisex | English |
| Sid | Wide meadow | Male | English |
| Simba | Lion | Female | Swahili |
| Skipper | Master of a Ship | Male | American English |
| Slim | Slender in proportion to height. | Unisex | English |
| Sniff | A short inhale through the nose. To savour or investigate a smell. | Unisex | English |