Last name Радюль (Радюль 
) , around the world, is a very rare surname. The cognomen Радюль is habitual in Belarus, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Russia. Measured by absolute frequency, it is the most numerous in Eastern Europe, particularly Russia, Belarus, and Ukraine. Very seldom, Радюль is the forename as well as the last name.