Last name บำเพ็ญ (Bumpen 
, Bampen 
, Bamphen 
) , across the world, is a rare cognomen. The surname บำเพ็ญ is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname, Thailand, where it is a rare surname, and Myanmar, where it is a very rare surname. Also, บำเพ็ญ is the forename as well as the last name.