| EQUIVALENTS |
| AMHARIC: Tewodros |
| ANCIENT GREEK: Theodoros, Theodorus |
| ARMENIAN: Toros |
| BULGARIAN: Teodor, Todor |
| CROATIAN: Teodor |
| CZECH: Teodor, Theodor |
| DANISH: Teodor, Theodor |
| DUTCH: Theodoor, Theodorus |
| FRENCH: Théodore |
| GEORGIAN: Tedore |
| GERMAN: Theodor |
| GREEK: Theodoros |
| HUNGARIAN: Teodor, Tivadar, Tódor |
| ITALIAN: Teodoro |
| LATVIAN: Teodors |
| MACEDONIAN: Teodor, Todor |
| NORWEGIAN: Teodor, Theodor |
| POLISH: Teodor |
| PORTUGUESE: Teodoro |
| ROMANIAN: Teodor, Theodor, Tudor |
| RUSSIAN: Fedor, Feodor, Fyodor |
| SERBIAN: Teodor, Todor |
| SLOVAK: Teodor |
| SLOVENE: Teodor |
| SPANISH: Teodoro |
| SWEDISH: Teodor, Theodor |
| UKRAINIAN: Fedir |
|
| DIMINUTIVES AND SHORT FORMS |
| CROATIAN: Teo |
| DUTCH: Theo |
| ENGLISH: Ted, Teddy, Theo |
| FINNISH: Teuvo |
| FRENCH: Théo |
| ITALIAN: Teo |
| LIMBURGISH: Thei |
| MACEDONIAN: Toše, Toshe |
| PORTUGUESE: Téo |
| RUSSIAN: Fedya |
| SPANISH: Teo |
|
| FEMININE FORMS |
| ANCIENT GREEK: Theodora |
| BULGARIAN: Teodora, Todorka |
| ENGLISH: Dora, Dorean, Doreen, Doretta, Dorinda, Dorine, Dorita, Theodora |
| GERMAN: Theda |
| GREEK: Dora, Theodora |
| HUNGARIAN: Dóra, Teodóra |
| ICELANDIC: Dóra, Theódóra |
| ITALIAN: Teodora |
| MACEDONIAN: Teodora, Todorka |
| POLISH: Teodora |
| PORTUGUESE: Teodora |
| ROMANIAN: Teodora |
| RUSSIAN: Fedora, Feodora |
| SERBIAN: Teodora |
| SPANISH: Teodora |
| SWEDISH: Tea, Teodora, Thea |
|
| OTHER FORMS |
| ENGLISH: Doria |
| FRENCH: Theirn |
| ROMANIAN: Dorin, Dorina |
|