Cognomen Šira (Шира 
, Šira 
, شیره) , in all the world, is a rare family name. The cognomen Šira is characteristic of Ukraine, where it is quite a rare surname, Croatia, where it is a rare surname, and Kazakhstan. In absolute terms, this name is the most popular in Ukraine, Russia, and Kazakhstan. Very seldom, Šira is the forename as well as the last name.