| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| THEODOARD | - | Ancient Germanic | ||
| THEODOOR | - | Dutch | ||
| THEODOR | - | German, Swedish, Norwegian, Danish, Czech, Romanian | ||
| Theodore | ['θiədɔ:] | |||
| THEODORE | THEE-ə-dawr | English | ||
| THEODORIC | thee-AHD-ə-rik (English) | History | ||
| THEODORICUS | - | Ancient Germanic (Latinized) | ||
| THEODOROS | - | Greek, Ancient Greek | ||
| THEODORUS | - | Ancient Greek (Latinized), Dutch | ||
| THEODOSIOS | - | Ancient Greek | ||
| THEODOSIUS | - | Ancient Greek (Latinized) | ||
| THEODOTOS | - | Ancient Greek | ||
| THEODOTUS | - | Ancient Greek (Latinized) | ||
| THEODOULOS | - | Ancient Greek | ||
| THEODULUS | - | Ancient Greek (Latinized) |