In the world, Diogen (Diogen 
, Диоген 
, Діоген 
) is a rare principally masculine, but very infrequently feminine forename. The forename Diogen is characteristic of Georgia, where it is quite a rare masculine name, Philippines, where it is a very rare epicene name, and Russia, where it is a very rare male name. Much less frequently, Diogen is the last name as well as the forename.