All over the world, Grigorios (Grigorios 
, Григориос 
) is a common masculine first name. The first name Grigorios is habitual in Greece, where it is a widespread boy's name, Cyprus, where it is quite a rare boy's name, and Germany, where it is a rare male name. Measured by absolute frequency, it is commonest in Greece, Germany, and the United States. Likewise, Grigorios is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Grigorios | Germany, Greece, United States, Sweden, Albania |
| Григориос | Russia |
| grigorios of antioch Greek Patriarch of Antioch (b. 550) |
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grigorios of dekapolis Byzantine monk (b. 797) |
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| grigorios tarchaneiotes Byzantine general (b. 950) |
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| grigorios kamateros (1001-1101) (b. 1001) |
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| grigorios gabras (b. 1050) |
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| grigorios taronites Byzantine governor (b. 1100) |
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grigorios ypsilantis Greek diplomat (1835-1886), AT (b. 1835) |
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| grigorios o adrianoupoleos Greek cleric, TR (b. 1785) |
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| grigorios lambovitiadis Greek patriot, AL (b. 1908) |
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grigorios aggelidis German businessman and politician (FDP), DE (b. 1965) |
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grigorios bakaris GR |
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| grigorios lorentzakis (b. 1942) |
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| grigorios a. pavliotis mathematician (b. 1976) |
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| grigorios nasios researcher |
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| grigorios karampas researcher (ORCID 0000-0001-5897-8958) |
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