Job, also known as Job of Moscow, was the first Patriarch of Moscow and All Russia. He is venerated as a saint by the Russian Orthodox Church. He was the Metropolitan of Moscow and all Rus' from 1587 to 1589. He was the seventeenth Metropolitan in Moscow to be appointed without the approval of the Ecumenical Patriarch of Constantinople as had been the norm. In 1589, Jeremias II, the Patriarch of Constantinople, regularized Job's canonical status and raised him to the status of patriarch.

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.