Cognomen Геннис (Gennis 
, Gennys 
, Геннис 
) , around the world, is a rare family name. The last name Геннис is characteristic of Venezuela, where it is a rare surname, Greece, and Honduras. In absolute terms, it is the most numerous in Venezuela, the United States, and Russia. Also, Геннис is the forename as well as the last name.