Cognomen Sawitchaya (Sawitchaya 
) , in the world, is an extremely rare last name. The family name Sawitchaya is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Sawitchaya is the forename as well as the last name.
Atria, Ditthayaem, Ditthayam, Tamningam, Usombatchai, Sirisasakun, Sornsukon, Sohbenarlee, Chaiyasaj, Buranason, Keatkeereerut, Khongchan, Pimprakhan, Lamaisakul, Sanguannam, Sinlapakarn, Suwannaruk, Chanchawapong, Buranasart, Bumrungrat, Prathummat, Phromchuay, Denprayoon, Ruchiditsaporn, Poommaputi, Promtawa, Suphab, Somsab, Sriram, Noping, Faitan, Yotpan, Apichai, Kongeang, Kitekeereerut, Krudpun, Kanthathasiri, Pakwarn, Pintana, Ramchan, Laoraung, Luerueang, Mungmuang, Mukradsada, Chamsakorn, Chinanad, Kongieang, Panmuang, Pokakul, and Wittayakornrerk