Cognomen Зидов (Sydow 
, Зидов 
) , all over the world, is quite a common last name. The cognomen Зидов is characteristic of Sweden, where it is quite a rare surname, Germany, and Iceland. Measured by absolute frequency, this name is the most popular in Germany, the United States, and Sweden. Very seldom, Зидов is the forename as well as the last name.