The siege of Izmail or Ismail / Ishmael / İzmail, also called the storming of Izmail, was a military action fought in 1790 on the Black Sea during the Russo-Turkish War (1787–1792) and simultaneously the Austro-Turkish War (1788–91). The Russians were led by Alexander Suvorov, who had defeated the Ottomans at Kinburn, Focsani, and Rymnik, as well as participating in the siege of Ochakov. The Black Sea rowing flotilla was commanded by the Spanish admiral José de Ribas. It is regarded as one of Suvorov's finest victories and one of the greatest deeds in world military history.

The Russo-Turkish War of 1787–1792 involved an unsuccessful attempt by the Ottoman Empire to regain lands lost to the Russian Empire in the course of the previous Russo-Turkish War (1768–1774). It took place concomitantly with the Austro-Turkish War (1788–1791), Russo-Swedish War (1788–1790) and Theatre War.