Surname พิชญเศรษฐ์ (พิชญเศรษฐ์ 
, Pichayaset) , in the entire world, is an extremely rare cognomen. The last name พิชญเศรษฐ์ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, พิชญเศรษฐ์ is the forename as well as the last name.