Family name Nrav (Mrav 
, Nrav 
) , around the globe, is a rare cognomen. The cognomen Nrav is habitual in Serbia, where it is quite a rare surname, Hungary, where it is a rare surname, and Croatia, where it is a very rare surname. In absolute terms, it most frequently occurs in Serbia, Hungary, and India. Very seldom, Nrav is the forename as well as the last name.