Surname Gretty (Gretty 
, גרטי 
) , all over the world, is a rare cognomen. The last name Gretty is habitual in Israel, where it is quite a rare surname, the Dominican Republic, and Venezuela, where it is a rare surname. In absolute terms, it is commonest in Mexico, Venezuela, and Israel. Likewise, Gretty is the forename as well as the last name.