| Name | Meaning | Gender | Origin |
|---|
| Sunkiss | | Unisex | |
| Sunkist | | Unisex | |
| Sunny | Abounding in sunshine, cheerful | Male | Nickname |
| Sunrise | | Unisex | |
| Sunset | Daily disappearance of the sun below the horizon. Usually red, yellow or orange in colour. | Unisex | |
| Syd | Variant of Sidney from St. Denis
| Male | |
| Tabasco | American spicy sauce made from red peppers. | Male | |
| Taco | A folded fried tortilla filled with meat, cheese and spices. | Unisex | |
| Taffy | Sticky candy | Male | Welsh |
| Taittinger | | Unisex | Hebrew |
| Tang | | Unisex | |
| Tanner | leather worker | Male | English |
| Tapioca | Starch used for puddings and as a thickening agent in cooking. | Unisex | |
| Taxi | | Unisex | |
| Tequila Sunrise | | Unisex | Hebrew |
| Tequilla | | Unisex | |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger | A large, striped, carnivorous mammal from Asia. | Male | Animal |
| Tiger Lily | | Unisex | |
| Tigger | from Winnie the Pooh | Unisex | |
| Toffee | A hard brown, chewy candy | Male | |
| Tom | Bartender at the Leaky Cauldron.
| Male | English |
| Trigger | | Unisex | |
| Tucker | Tucker of doth
| Male | English |
| Tumbles | | Unisex | |