Surname Сичин (Сичин 
, Sitchin 
) , all around the world, is a very rare family name. The family name Сичин is habitual in Israel, where it is a very rare surname, Kazakhstan, and Brazil, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Brazil, Russia, and the United States. Very seldom, Сичин is the forename as well as the last name.