Last name Usainova (Usainova 
, Усаинова 
) , throughout the world, is a rare surname. The cognomen Usainova is habitual in North Macedonia, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Bulgaria. Measured by absolute frequency, this name is the most popular in Russia, Kazakhstan, and North Macedonia. Very seldom, Usainova is the forename as well as the last name.