The siege of Ochakov (1737) took place during the Austro-Russian–Turkish War (1735–39) in which the Russian army, led by Burkhard Christoph von Münnich, captured the Ottoman fortress of Ochakov.

The first Russian attack was repelled with heavy losses, but as a result of heavy mortar fire, a fire broke out, and on the second day a powder magazine within the city blew up, killing around 6,000 defenders.

[2] The stench of decaying corpses was such that the Russians had to withdraw 15 miles from the fortress.

[2] The Russians razed and abandoned Özi in late 1738 after a disease ravaged the Russian garrison of the fortress, killing 60,000 people.

[8] The Russians only managed to regain Özi in December 1788.