Cognomen Penpichaya (Penpichaya 
) , in the world, is an extremely rare last name. The last name Penpichaya is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Penpichaya is the forename as well as the last name.
Madee, Photichanprasert, Tanapatka, Pinprayoon, Keatkulatam, Wanthong, Harnchan, Nitithum, Trangarn, Triyasut, Thepkaew, Ittiphanyakul, Thamthada, Chowalit, Chookaow, Soponsiri, Sujawipan, Chaoubon, Pensit, Kaetkultam, Boonma, Cha Em, Miyan, Pongwilai, and Wongpiriyachai