Cognomen Tsuk (צוק 
, Tsuk 
, Цук 
) , worldwide, is a rare last name. The surname Tsuk is habitual in Israel, where it is quite a rare surname, Portugal, where it is a rare surname, and Kazakhstan, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Israel, Russia, and Portugal. Much less frequently, Tsuk is the forename as well as the last name.