| Timotha | | TIM-ə-thə | English (Rare) | |
| Timothy | | TIM-ə-thee (English) | English, Biblical | |
| Tina | | TEE-nə (English), TEE-nah (Italian, Dutch) | English, Italian, Dutch, Slovene, Croatian, Macedonian | |
| Tisha | | TISH-ə | English, African American | |
| Titty | | TIT-ee | English | |
| Titus | | TI-tuws (Ancient Roman), TIE-təs (English) | Ancient Roman, English, Biblical, Biblical Latin | |
| Tobias | | to-BEE-ahs (German), tə-BIE-əs (English) | Biblical, German, Swedish, Norwegian, Danish, English, Biblical Latin, Biblical Greek | |
| Tobin | | TO-bin | English | |
| Toby | | TO-bee | English | |
| Tod | | TAHD | English | |
| Todd | | TAHD | English | |
| Tolly | | - | English (Archaic) | |
| Tom (1) | | TAHM (English), TAWM (Dutch) | English, Dutch | |
| Tommie | | TAHM-ee | English | |
| Tommy | | TAHM-ee | English | |