Family name Radyl (Радил 
, Radyl 
) , all over the world, is a very rare cognomen. The surname Radyl is habitual in Bulgaria, where it is quite a rare surname, Kyrgyzstan, where it is a rare surname, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Bulgaria, Kyrgyzstan, and Russia. More frequently, Radyl is the forename as well as the last name.