Last name Leontios (Леонтий 
, Leontios 
) , in the entire world, is a rare surname. The cognomen Leontios is characteristic of Greece, where it is quite a rare surname, Kyrgyzstan, where it is a rare surname, and Bulgaria. Measured by absolute frequency, the name is most common in Greece, Russia, and Kyrgyzstan. Much more prevalently, Leontios is the forename as well as the last name.