Family name ไพรเจริญ (ไพรเจริญ 
, Praijaroen , Phraicharoen ) , throughout the world, is a very rare cognomen. The last name ไพรเจริญ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, ไพรเจริญ is the forename as well as the last name.