Family name Simenov (Simenov 
, Сименов 
) , globally, is a rare cognomen. The family name Simenov is habitual in Azerbaijan, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Bulgaria. Measured by absolute frequency, it is the most numerous in Russia, Azerbaijan, and Kazakhstan. Very seldom, Simenov is the forename as well as the last name.