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Caio meaning, boyCaio

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Meaning and name origin

Caio \caio\ as a boy's name is of Welsh and Latin origin, and the meaning of Caio is "happy". Caio is a variant of Caeo (Welsh): name of a village and parish in Carmarthenshire (known as the "Garden of Wales") used as a first name in Wales. Also a variant of Cai (Welsh): used as a respelling of Kai in Wales. Caio is also used as a variant of Caius (Latin), Gaius (Latin).

Caio has 6 variant forms: Caw, Cayo, Kai, Kay, Kaye, Keye.


Caio is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).

Displayed below is a comparison of the popularity of the boy name Caio and its variant forms. Variation forms ranked in the Top 1000/100 are Kai and Kay. (2015 statistics).

Top 1000 baby names ranking of Kai, Kay in U.S.

Top 100 baby names ranking of Kai outside U.S.

Similar Names

Suggested similar baby names are Cain, Cairo, Cato, Chai and Chayo. Like Caio, these names are not commonly used.


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