Surname วาปี (วาปี 
, Wapi 
, Wapee 
) , all over the world, is quite a rare cognomen. The cognomen วาปี is characteristic of Papua New Guinea, where it is quite a rare surname, Thailand, and Cameroon. Measured by absolute frequency, it is the most numerous in Thailand, Papua New Guinea, and Tanzania. Much less frequently, วาปี is the forename as well as the last name.