Baek, also often spelled Paek, Baik or Paik, is a common Korean family name. As of 2000, there were 351,275 people by this surname in South Korea.
白(Bai) is pronounced "Baek" in Korean. The name has a Cantonese origin from the Yuan dynasty and Goryeo dynasty.
Some Baekje refugees from the late Silla age had this surname.