Surname Penpun (Penpun 
, เพ็ญพูน ) , in the world, is a very rare cognomen. The cognomen Penpun is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Predominantly, Penpun is the forename as well as the last name.
Inma, Gatsuwan, Thakulhirun, Tikhinanon, Yuwapattana, Uengpanich, Sakunnakorn, Singhaput, Singthong, Suttipool, Sriraksasin, Leartwattanachai, Jongsuwat, Tanniratt, Thungkorn, Wannasomporn, Wisitthadakul, Sinthunont, Chunkhonkaen, Kitcharanant, Intavimolsri, Thienchaipong, Punyadee, Petchari, Kukernphong, Buakhunnen, Garno, Sonjai, Somnil, Somyat, Kuntee, Pensuk, Peammul, Piwbuakum, Sanprom, Saeting, Wattanakrai, Chansom, Bangpra, Keofanapadon, Promrut, Leartjettanarom, Noopong, Yuvaves, Mangkang, Siriyaem, Sueakaew, Seesuwan, Chundprasit, and Lertwattanachai