Cognomen Kyrus (Kyrus 
, قورش, Кирус 
) , throughout the world, is a very rare surname. The family name Kyrus is habitual in New Zealand, where it is a very rare surname, Kazakhstan, and Russia. Not in comparison with a country's population, this name is the most popular in the United States, Russia, and Kazakhstan. Likewise, Kyrus is the forename as well as the last name.