Surname สุดาเพ็ญ (Sudaphen 
, สุดาเพ็ญ ) , in the entire world, is a very rare last name. The surname สุดาเพ็ญ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, สุดาเพ็ญ is the forename as well as the last name.