Family name Poorichaya (Poorichaya 
) , across the world, is an extremely rare surname. Much more prevalently, Poorichaya is the forename as well as the last name.
Kato, Lertlukkanawat, Rueangtrinat, Khongsrikaew, Songsriboonsit, Rueangtainat, Poosapanich, Polyangnok, Chainunta, Udomlarp, Wimolpuk, Dharmasakti, Najaroen, Palapinyo, Chumtongdo, Chumnumduang, Sinthong, Wilamat, Rangsri, Somparn, Boonma, Ananta, Jinda, Prommahit, and Jariyawaranoogoon