| Terrence | Man | English Names |
| Terri | Woman | English Names |
| Terris | Unisex | English Names |
| Terry | Unisex | English Names |
| Tess | Woman | English Names |
| Tessa | Woman | English Names |
| Tessie | Woman | English Names |
| Thackary | Unisex | English Names |
| Thane | Unisex | English Names |
| Thatcher | Man | English Names |
| Thayer | Man | English Names |
| Thelred | Unisex | English Names |
| Theobald | Man | English Names |
| Thompson | Man | English Names |
| Thorley | Unisex | English Names |
| Thorne | Man | English Names |
| Thornton | Man | English Names |
| Thurl | Unisex | English Names |
| Thurman | Man | English Names |
| Thurstan | Man | English Names |