Surname Buakhai (บัวไข 
, Buakhai 
, บัวใหญ่) , in the entire world, is quite a rare cognomen. The cognomen Buakhai is habitual in Thailand, where it is quite a rare surname, Denmark, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Buakhai is the forename as well as the last name.