Surname Сомчай (Somchai 
, Сомчай 
) , throughout the world, is quite a rare last name. The family name Сомчай is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname, Malaysia, where it is a rare surname, and Myanmar. In absolute terms, this name is the most popular in Thailand, Malaysia, and China. Predominantly, Сомчай is the forename as well as the last name.