Family name Gatsa (Гаца 
, Gatsa 
) , throughout the world, is a rare cognomen. The last name Gatsa is characteristic of Bulgaria, where it is quite a rare surname, Greece, where it is a rare surname, and Ukraine. In absolute terms, it is the most numerous in Eastern Europe, particularly Bulgaria, Ukraine, and Russia. Likewise, Gatsa is the forename as well as the last name.