Last name Сикорски (Sikorski 
, Sikorsky , Сикорски 
) , in all the world, is a common family name. The cognomen Сикорски is habitual in Poland, where it is quite a common surname, Germany, where it is quite a rare surname, and Estonia. Not in comparison with a country's population, it most frequently occurs in Poland, the United States, and Germany. Also, Сикорски is the forename as well as the last name.