Meaning and name origin
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".
For more information, see also the related boy name Cai.
Kai is not a popular first name for males but a very popular surname or last name for all people (#25480 out of 88799, Top 29%) (2000 U.S. Census).
Displayed below is the baby name popularity of the name Kai for boys. Kai reached its highest rank of #177 in the U.S. in 2014. (2014 statistics).
Displayed below is a comparison of the popularity of the boy name Kai and its variant forms. Popular variation forms ranked in the Top 1000/100 are Kai (#177) and Kay. (2014 statistics).
Kai▲ is also pronounced similarly to Caio, Caw, Kauai, Kawai, Kaye, Key and Koa. Other suggested similar baby names are Dai, Hai, Jai, KC, Kail, Kain, Kam, Kari, Kasi, Kaz and Rai. These names tend to be more commonly used than Kai.