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| Theuderic II | 595 | 613 | Merovingians | ||
| Theuderic I | 511 | 534 | Merovingians | ||
| Theudebert II | 595 | 612 | Merovingians | ||
| Theudebert I | 534 | 548 | Merovingians | ||
| Theudebald | 548 | 555 | Merovingians | ||
| Theodosius II or Valentinian III | 402 | 455 | Roman Empire | ||
| Theodosius II or Leo I | 402 | 474 | Eastern Roman Empire | ||
| Theodosius II | 402 | 450 | Eastern Roman Empire | ||
| Theodosius I or Theodosius II | 379 | 450 | Eastern Roman Empire | ||
| Theodosius I or Honorius | 379 | 423 | Roman Empire | ||
| Theodosius I or Arcadius | 379 | 408 | Roman Empire | ||
| Theodosius I | 379 | 395 | Roman Empire | ||
| Theodosios III | 715 | 717 | Eastern Roman Empire | ||
| Theodora (4th century) | 337 | 340 | Roman Empire | ||
| Theoderic | 489 | 526 | Ostrogoths | ||
| Theodahad | 534 | 536 | Ostrogoths | ||
| Teia | 552 | 553 | Ostrogoths | ||
| Tegin Shah (Sri Shahi) | 680 | 739 | Turk Shahis | ||
| Taizong | 626 | 649 | Tang | ||
| Suniefred | 692 | 693 | Visigoths |