Family name Кирю (Kiryu 
, Кирю 
) , all over the world, is a rare surname. The surname Кирю is habitual in Brunei, where it is quite a rare surname, Bulgaria, and Singapore, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Indonesia, Bulgaria, and Japan. More frequently, Кирю is the forename as well as the last name.