| Sylvi | | SUYL-vee (Finnish) | Norwegian, Swedish, Finnish | |
| Sylvia | | SIL-vee-ə (English), SUYL-vee-ah (Finnish) | English, Swedish, Norwegian, Danish, Finnish, German | |
| TÄHti | | - | Finnish (Rare) | |
| Taavetti | | TAH:-vet-tee | Finnish | |
| Taavi | | TAH:-vee (Finnish) | Estonian, Finnish | |
| Tahvo | | TAHH-vo | Finnish | |
| Taika | | - | Finnish (Rare) | |
| Taimi | | TIE-mee | Finnish | |
| Taina | | TIE-nah | Finnish | |
| Taisto | | TIES-to | Finnish | |
| Taneli | | TAH-ne-lee | Finnish | |
| Tanja | | TAHN-yah (German, Finnish) | German, Finnish, Serbian, Croatian, Slovene, Macedonian, Danish, Swedish, Norwegian | |
| Tapani | | TAH-pah-nee | Finnish | |
| Tapio | | TAH-pee-o (Finnish) | Finnish, Finnish Mythology | |
| Tarja | | TAHR-yah | Finnish | |