Surname Sybyl (Sybyl 
, Сибил 
) , in all the world, is a very rare last name. The cognomen Sybyl is characteristic of Russia, where it is a very rare surname, Honduras, and Mexico, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Russia, the United States, and Mexico. Also, Sybyl is the forename as well as the last name.