Last name Shley (Shley 
, Шлей 
) , in all the world, is a rare surname. The last name Shley is characteristic of Kazakhstan, where it is quite a rare surname, Kyrgyzstan, where it is a rare surname, and Ukraine. Measured by absolute frequency, it is commonest in Kazakhstan, Russia, and Ukraine. Much less frequently, Shley is the forename as well as the last name.