Family name Mehai (Mehai 
) , all over the world, is a rare last name. The cognomen Mehai is habitual in Algeria, where it is a rare surname, Canada, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Algeria, India, and the United States. Much less frequently, Mehai is the forename as well as the last name.