Last name Šir (Шир 
, Šir 
) , worldwide, is a rare surname. The family name Šir is habitual in Kyrgyzstan, where it is a rare surname, Croatia, and Ukraine, where it is a very rare surname. In absolute terms, it is the most numerous in Russia, Kyrgyzstan, and Ukraine. Much less frequently, Šir is the forename as well as the last name.