Last name บัวใหญ่ (Buakhai 
, Buayai 
, บัวใหญ่) , all around the world, is quite a rare cognomen. The last name บัวใหญ่ is characteristic of Thailand, where it is quite a rare surname, Tanzania, where it is a very rare surname, and Denmark. In absolute terms, it most frequently occurs in Thailand, Tanzania, and the United States. Much less frequently, บัวใหญ่ is the forename as well as the last name.