Family name Денніс (Deniss 
, Денніс 
) , around the globe, is quite a rare cognomen. The family name Денніс is habitual in Latvia, where it is quite a rare surname, Honduras, where it is a rare surname, and Mexico. In absolute terms, it is the most numerous in Mexico, Romania, and Honduras. More frequently, Денніс is the forename as well as the last name.