Cognomen סדיך (Sedih 
, Sedykh 
, סדיך 
) , throughout the world, is a rare surname. The surname סדיך is characteristic of Estonia, where it is quite a rare surname, Cyprus, and Lithuania, where it is a rare surname. In absolute terms, it is the most numerous in Russia, Indonesia, and the United States. Very seldom, סדיך is the forename as well as the last name.