Surname วงศ์โรจน์ (วงศ์โรจน์ 
, Wongroj , Wongrob ) , all over the world, is a rare family name. The surname วงศ์โรจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, วงศ์โรจน์ is the forename as well as the last name.