Family name แสงรุ้ง (Sangrung 
, แสงรุ้ง) , around the globe, is a rare surname. The surname แสงรุ้ง is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, แสงรุ้ง is the forename as well as the last name.