All around the world, Kōnstantinos (Konstantinos 
, Kōnstantinos) is a widespread masculine first name. The first name Kōnstantinos is characteristic of Greece, where it is a prevalent masculine name, Cyprus, where it is quite a common male name, and Germany, where it is quite a rare male name. Not in comparison with a country's population, this name is the most popular in Greece, Germany, and the United States. Also, Kōnstantinos is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Konstantinos | Greece, Germany, United States, United Kingdom, Cyprus |
| kōnstantinos rhodokanakēs GR (b. 1635) |
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| kōnstantinos rhodokanakēs (b. 1635) |
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| kōnstantinos chrēstidēs (b. 1818) |
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| kōnstantinos karaparēs (b. 1840) |
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| kōnstantinos k. mētsotakēs (b. 1845) |
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| kōnstantinos g. zēsiu (b. 1848) |
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| kōnstantinos artemēs (b. 1878) |
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| kōnstantinos drakos economist (Athens University of Economics and Business (AUEB)) (b. 1900) |
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| kōnstantinos iō. merentitēs (b. 1906) |
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| kōnstantinos lianos (b. 1917) |
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| kōnstantinos i. bambakas GR (b. 1931) |
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| kōnstantinos d. papadakēs GR (b. 1935) |
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| kōnstantinos nikas GR (b. 1935) |
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| kōnstantinos n. tsirpanlēs GR (b. 1935) |
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| kōnstantinos dēm. kerameus (b. 1937) |
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