Across the world, Θεόδωρος (Theodoros 
, Theadore 
, Θεόδωρος ) is a widespread male forename. The first name Θεόδωρος is habitual in Greece, where it is a prevalent male name, Cyprus, where it is quite a common masculine name, and Germany, where it is quite a rare boy's name. In absolute terms, it most frequently occurs in Greece, Germany, and the United States. Also, Θεόδωρος is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Theodoros | Greece, Sweden, Germany, United States, Cyprus |
| Theadore | Canada, United Kingdom, United States, Malaysia, South Africa |
| Θεόδωρος | Greece |
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| θεόδωρος ancient Greek philosopher (ca. 340–250 BCE), LY (b. 340) |
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θεόδωρος κομνηνός δούκας Byzantine Emperor, GR (b. 1180) |
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| θεόδωρος αψευδής Greek painter, CY (b. 1150) |
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θεόδωρος συναδηνός Byzantine governor, TR (b. 1275) |
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| θεόδωρος σκουταριώτης Byzantine cleric (b. 1230) |
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| θεόδωρος β' λάσκαρις (b. 1222) |
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| θεόδωρος φιλῆς Byzantine governor (b. 1250) |
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θεόδωρος γαζής Greek Renaissance humanist scholar, GR (b. 1398) |
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θεόδωρος πουλάκης Greek artist (1622-1692), GR (b. 1622) |
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| θεόδωρος μοντσελέζε GR (b. 1650) |
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| θεόδωρος καβαλιώτης Greek Orthodox cleric, GR (b. 1718) |
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θεόδωρος κολοκοτρώνης Greek general (1770-1843), GR (b. 1770) |
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θεόδωρος βλαχοπαπαδόπουλος Archbishop of Athens, GR (b. 1780) |
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θεόδωρος ο φωκαεύς Greek musician, TR (b. 1790) |
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θεόδωρος μανούσης Greek university professor, GR (b. 1793) |
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Μίνα, Βασιλείου, Τριανταφυλλίδης, Παπαχρήστου, Παπαδόπουλος, Οικονομίδης, Μουρατίδης, Κολοκοτρώνης, Νικολαΐδης, Παντελή, Θωμαδάκης, Τερζόπουλος, Ζερβός, Αλεξόπουλος, Μπαφαλούκος, Σκυλακάκης, Πάγκαλος, Παπαϊωάννου, and Παναγιώτης