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What does Caio mean?

Caio Pronunciation of Caio [caio] as a boys' name is a Welsh and Latin name, and the meaning of Caio is "happy". Caio is an alternate spelling of Caeo (Welsh). Caio is also a variation of Cai (Welsh). Caio is also used as a derivative of Caius (Latin) and Gaius (Latin).

Associated with: happy.


Caio has 6 variants: Caw, Cayo, Kai, Kay, Kaye and Keye.

Creative forms:
(male) Caiot, Cario, ..

(female) Cacor, Cais, ..

Middle name pairings:
Caio Knox (C.K.), ..

How popular is Caio?

Caio is an uncommonly occurring first name for men. Caio is an unusual last name too for both adults and children. (2000 U.S. Census)

Which version is better?

with its source forms and related boy names. Popular variation forms of Caio (not in Top 2000) are Kai (#145 in recent rankings), Caius (#1283), Cai (#1819), Kaye and Kay. Other forms, like Caw, are uncommon. These relations of Caio were popular as birth names in 2015 (median #1449), except for the form Kay which have become somewhat outmoded. Kai is the most contemporarily stylish name for newborns among these. (Top 2000 Names, 2015)

Top 2000 baby names ranking of Cai, Caius, Kai, Kay, Kaye in U.S.

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

Similar Names

Caio is pronounced similarly to Coe, Coy and Coye. Other recommended names are Ario, Cabe, Cabot, Cace, Cade, Cadmo (see Cadmus), Cadoc, Cadog, Cadon, Cael, Caide, Caidon, Caile, Caily, Cain, Caine, Caird, Cairn, Cairo, Caje, Cal, Cale, Cam, Camilo, Canon, Cap, Capp, Card, Carl, Carlo, Caron, Carr, Cary, Case, Cash, Cason, Cass, Cassio, Cato, Cayto, Caz, Celio, Chai, Chaim, Chairo, Chano, Chayo, Chic, Chico, Chik, Chiko, Chip, Chiro, Cid, Ciro, Clair, Claro, Cleo, Como, Craig, Craik, Crain, Cris, Dacio, Dario, Ezio, Fabio, Favio, Mario, Pio, Rio and Tavio. These names tend to be more commonly used than Caio.

See names
in meaning and etymology.