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Origin: Kai derives from a multitude of origins. In the U.S., it is often connected to its Hawaiian roots, meaning “sea.” Gender: Kai is most commonly a boy’s name but it’s occasionally given to girls. Pronunciation: Kye In Estonian, Kai is a female (and very rarely male) name meaning "pier" or "quay".12 In Japanese, kai has a number of meanings, including "ocean" (海), "shell" (貝), "open" (開), "restoration" and "recovery".34 In Māori, kai means "food" or "meal".5 In Northern Ireland, data indicated that Kai experienced a significant rise in popularity as a male given name from 2002 to 2003.6
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