Cognomen Гретски (Gretzky 
, Гретски 
, Greckis 
) , around the world, is a very rare surname. The last name Гретски is habitual in Latvia, where it is quite a rare surname, Lithuania, where it is a rare surname, and New Zealand, where it is a very rare surname. Measured by absolute frequency, the name is most common in the United States, Latvia, and Canada. Very seldom, Гретски is the forename as well as the last name.