Family name Pawichaya (Pawichaya 
) , all over the world, is an extremely rare surname. Much more frequently, Pawichaya is the forename as well as the last name.
Tan, Niamkhum, Noppakhun, Wirophas, Wongsena, Sornsawat, Sripakdee, Sriarthit, Ruangchit, Khongchan, Duangporn, Tananchai, Nachaisit, Suphinnapong, Srimacharoen, Aphiwatchaiyasiri, Rattanaphan, Kittiwilailux, Kimchiang, Khongyarit, Khankaew, Mayoe, Phonin, Nakpan, Siammai, Supharn, Srakaew, Chaowiang, Chinsri, Chittra, Rodniyom, Niseeda, Haemdang, Hemdang, Manokarn, Sungworn, Supawong, Chudkratoke, Sunthornthip, and Watanapaiboon