In the entire world, Gerdan (Gerdan 
, Гердан 
) is a rare unisex first name. The forename Gerdan is habitual in the Democratic Republic of the Congo, where it is a rare male name, Turkey, where it is a rare girly name, and Philippines, where it is a very rare largely masculine, but seldom feminine name. Measured by absolute frequency, it is the most numerous in the Democratic Republic of the Congo, Turkey, and Brazil. Likewise, Gerdan is the last name as well as the forename.