Last name Rajf (Райф 
, Rajf 
) , all over the world, is a rare cognomen. The family name Rajf is habitual in Croatia, where it is quite a rare surname, Czechia, where it is a rare surname, and Belarus, where it is a very rare surname. Measured by absolute frequency, it is commonest in Russia, Czechia, and Croatia. Very seldom, Rajf is the forename as well as the last name.