Surname Shagina (Shagina 
, Шагина 
) , in the world, is quite a rare last name. The cognomen Shagina is habitual in Russia, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Bulgaria. Measured by absolute frequency, the name is most common in Russia, Tanzania, and Kazakhstan. Very seldom, Shagina is the forename as well as the last name.