Last name พรสมิทธิ์ (พรสมิทธิ์ 
) , in the entire world, is a very rare cognomen. The cognomen พรสมิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, พรสมิทธิ์ is the forename as well as the last name.