Kai is a name of Japanese origin, meaning "sea" in Japanese. It has been traditionally used as both a boy's and girl's name in Japan, but it has gained popularity internationally as a unisex name. The name Kai is often associated with the sea or water, reflecting its Japanese origin. Some people may also associate the name with other meanings or references, such as the Hawaiian word "kai" meaning "sea," or the Norse god of the sea, Kai. However, the most widely accepted origin and meaning of the name Kai is its Japanese meaning of "sea." Throughout history, many notable individuals have borne the name Kai, both in Japan and internationally. For example, Kai ten Brink was a Dutch artist known for his marine paintings, while Kai Diekmann is a German journalist and editor-in-chief of Bild newspaper. The name Kai has also been used in popular culture, such as in the video game "Final Fantasy XV," where one of the main characters is named Prompto Kawamura, often referred to simply by his first name Kai. Overall, the name Kai is a unisex name of Japanese origin that means "sea." It has gained international popularity and has been borne by many notable individuals throughout history.
"Ka experienced its peak popularity between 1981 and 1989, with a high of 65 births in 1990. However, it has since declined sharply, with only 6 births recorded in 2004."