Family name Сицко (Sicko 
, Сицко 
, Sitsko 
) , globally, is a rare surname. The last name Сицко is characteristic of Belarus, where it is quite a rare surname, Slovakia, and Latvia, where it is a rare surname. In absolute terms, it is the most numerous in Belarus, the United States, and Germany. Very seldom, Сицко is the forename as well as the last name.