| Teresa | | te-RE-sah (Spanish, Polish), te-RE-zah (Italian, German), TE-re-sah (Finnish), tə-REE-sə (English), tə-REE-zə (English) | Spanish, Portuguese, Italian, Finnish, Polish, German, Swedish, Norwegian, Danish, English | |
| Terese | | te-RES (Swedish) | Basque, Swedish, Norwegian, Danish | |
| Thea | | TE-ah (German), THEE-ə (English) | German, Swedish, Danish, Norwegian, English | |
| Theodor | | - | German, Swedish, Norwegian, Danish, Czech, Romanian | |
| Theresa | | tə-REE-sə (English), tə-RAY-zə (English), te-RE-zah (German) | English, German, Swedish, Norwegian, Danish | |
| Therese | | te-RE-zə (German), te-RES (Swedish), tə-REES (English) | German, Swedish, Norwegian, Danish, English | |
| Thomas | | TAHM-əs (English), TOM-əs (English), to-MAH (French), TO-mahs (German, Dutch), tho-MAHS (Greek) | English, French, German, Dutch, Swedish, Norwegian, Danish, Greek, Biblical, Biblical Latin, Biblica | |
| Thor | | THOR (English), TOR (Danish), TOOR (Swedish, Norwegian) | Norse Mythology, Danish, Swedish, Norwegian | |
| Thora | | - | Swedish, Norwegian, Danish, German | |
| Thorben | | TAWR-ben (German) | Danish, German | |
| Thore | | - | Swedish, Norwegian, Danish | |
| Thorsten | | TAWR-sten (German) | Swedish, Danish, German | |
| Thorvald | | - | Swedish, Norwegian, Danish | |
| Thyra | | - | Swedish, Norwegian, Danish | |
| Tilde | | - | Danish | |