Kelai may refer to:
Kelai River, river in Borneo, Indonesia John Kelai (born 1976), Kenyan long-distance runner Collei (), a character in the video game Genshin Impact
See also Kalayeh, Rudbar, Iranian village, also known as Kelā’ī Punan Kelai language, also known as Segai, Austronesian language, spoken in several communities along the Kelai River