| Tommaso | Man | Italian Names |
| Tommen | Man | American Names |
| Tommy | Man | English Names |
| Tomo | Woman | Japanese Names |
| Tomoe | Woman | Japanese Names |
| Tomofumi | Man | Japanese Names |
| Tomohiro | Man | Japanese Names |
| Tomoka | Woman | Japanese Names |
| Tomoko | Woman | Japanese Names |
| Tomomi | Woman | Japanese Names |
| Tomoya | Man | Japanese Names |
| Tomoyo | Woman | Japanese Names |
| Toni | Woman | English Names |
| Tonia | Woman | Latin Names |
| Tonicia | Woman | American Names |
| Tony | Man | English Names |
| Tonya | Woman | American Names |
| Tooantuh | Man | Native American - Cherokee Names |
| Topanga | Woman | Native American Names |
| Topaz | Unisex | Latin Names |