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Joasaphus | |
|---|---|
| Patriarch of Moscow and all the Rus' | |
 | |
| Church | Russian Orthodox Church |
| See | Moscow |
| Installed | 1634 |
| Term ended | 1640 |
| Predecessor | Filaret |
| Successor | Joseph |
| Personal details | |
| Born | |
| Died | 28 November 1640 |
| Buried | Dormition Cathedral, Moscow |
Joasaphus I (Russian: Иоасаф I, romanized: Ioasaf I; ? – 28 November 1640, Moscow) was the fifth Patriarch of Moscow and All Russia (1634–1640).