Gender / Sex: boy (Kai's also a girl name)
Meaning: keeper of the keys; earth
Sounds Like: Cai, Kaye, Caio, Gay, Kauai, Kawai, Key
Variant forms: Kaj, Keh, Kye
Rank as Last Name (Surname, Family Name): 25480
Kai \kai\ as a boy's name (also used as girl's name Kai), is pronounced kye. It is of Welsh, Scandinavian and Greek origin, and the meaning of Kai is "keeper of the keys; earth". Variant of Kay. Also possibly (South African) "beautiful". Kai is also a Hawaiian name meaning "the sea".
Kai has 3 variant forms: Kaj, Keh and Kye.
Baby names that sound like Kai are Cai, Kaye, Caio, Gay, Kauai, Kawai and Key.
View a list of the 2 names that reference Kai.
Kai is not a popular first name for men but a very popular surname or last name for both men and women (#25480 out of 88799). (1990 U.S. Census)