| Tiffany | | TIF-ə-nee | English | |
| Tiffiny | | TIF-ə-nee | English (Rare) | |
| Tiger | | TIE-gər | English (Rare) | |
| Tilda | | TEEL-dah (Finnish) | English, Swedish, Finnish | |
| Tillie | | TIL-ee | English | |
| Tilly | | TIL-ee | English | |
| Tim | | TIM (English, German, Dutch, Slovene) | English, German, Dutch, Slovene, Swedish, Norwegian, Danish | |
| Timaeus | | tie-MEE-əs (English) | Ancient Greek (Latinized), Biblical Latin, Biblical | |
| Timaios | | - | Ancient Greek, Biblical Greek | |
| Timmy | | TIM-ee | English | |
| Timo (3) | | - | Ancient Greek | |
| Timon | | TIE-mən (English), TEE-mawn (Dutch) | Ancient Greek, Biblical, Biblical Greek, Biblical Latin, Dutch | |
| Timotej | | - | Slovene, Macedonian, Slovak | |
| Timoteus | | - | Ancient Greek (Latinized) | |
| TimothÉ | | tee-mo-TE | French | |