Kirill or Cyril is a Russian Orthodox bishop. He became Patriarch of Moscow and all Rus' and Primate of the Russian Orthodox Church on 1 February 2009.

The Patriarch of Moscow and all Rus', also known as the Patriarch of Moscow and all Russia, is the title of the primate of the Russian Orthodox Church. It is often preceded by the honorific "His Holiness". As the ordinary of the Diocese of Moscow, the office holder's direct canonical remit extends only to Moscow; however, as Patriarch, the office holder has a number of church-wide administrative powers as laid down by the charter of the Russian Orthodox Church.