>
Worldwide, かい (かい) is an extremely rare unknown gender forename.
Hai, Hui, Huì, Hái, Hǎi, Kai, Kái, Kāi, Xie, Каи, Кай, Каі, קאי, هوي, ハイ, 会, 凯, 凱, 开, 會, 海, 海姓, 甲斐, 解, 謝, 谢, and 開
かい is also a name for the fictitious and mythical characters: .