Cognomen Kalov (Kalov 
, Калов 
) , in the entire world, is a rare family name. The last name Kalov is habitual in Bulgaria, where it is quite a rare surname, Kyrgyzstan, where it is a rare surname, and Ukraine. Measured by absolute frequency, the name is most common in Eastern Europe, particularly Russia, Bulgaria, and Ukraine. Much less frequently, Kalov is the forename as well as the last name.