Surname Сундин (Sundin 
, Sundina 
, Sundyn ) , in all the world, is quite a common family name. The surname Сундин is characteristic of Northern Europe, particularly Sweden, where it is quite a common surname, Norway, where it is quite a rare surname, and Latvia. Measured by absolute frequency, it is commonest in Sweden, the United States, and Brazil. Very seldom, Сундин is the forename as well as the last name.