Throughout the world, Dianca (Dianca 
) is a rare principally female, but very infrequently male first name. The given name Dianca is habitual in Romania, where it is a rare female name, the United States, where it is a very rare mostly female, but uncommonly masculine name, and Mexico, where it is a very rare female name. Much less frequently, Dianca is the last name as well as the forename.