In the world, Растіслав (Rastislav 
, Растіслав 
) is quite a rare male first name. The first name Растіслав is habitual in Slovakia, where it is quite a common boy's name, Slovenia, where it is quite a rare boy's name, and Czechia. Not in comparison with a country's population, it most frequently occurs in Slovakia, Czechia, and Serbia. Very seldom, Растіслав is the last name as well as the forename.