Cognomen Καλός (Calos 
, Calo 
, Calophyllum 
) , around the globe, is a common surname. The last name Καλός is characteristic of Vanuatu, where it is quite a common surname, Eswatini, and Puerto Rico (explore the name in all countries). In absolute terms, it most frequently occurs in Philippines, Italy, and Argentina. Much less frequently, Καλός is the forename as well as the last name.
| δημήτριος ο καλός King of Cyrene, LY (b. 285) |
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| γεώργιος καλός Greek politician, GR (b. 1949) |
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| χρήστος καλός GR |
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