In the world, เพ็ญศิรินภา (เพ็ญศิรินภา 
) is a very rare epicene first name. The forename เพ็ญศิรินภา is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare epicene name. More prevalently, เพ็ญศิรินภา is the last name as well as the forename.