Last name Надја (Nadja 
, Надја) , across the world, is quite a rare cognomen. The last name Надја is characteristic of Liechtenstein, where it is quite a common surname, Slovenia, where it is quite a rare surname, and Serbia. In absolute terms, it most frequently occurs in Indonesia, the United States, and Algeria. Much more frequently, Надја is the forename as well as the last name.