Last name Kulchai (Кульчай 
, กูลชัย 
, Kulchai 
) , around the globe, is a rare cognomen. The last name Kulchai is characteristic of Thailand, where it is a rare surname, Kyrgyzstan, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Also, Kulchai is the forename as well as the last name.