Surname พัฒนกาญจน์ (พัฒนกาญจน์ 
, Phannakarn ) , in all the world, is a very rare family name. The surname พัฒนกาญจน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, พัฒนกาญจน์ is the forename as well as the last name.