The Second Battle of Khorramshahr, also known in Iran as the Liberation of Khorramshahr was the Iranian recapture of the city of Khorramshahr on 24 May 1982, during the Iran–Iraq War. The city had been captured by the Iraqis earlier in the war, on 26 October 1980, shortly after the Iraqi invasion of Iran. The successful retaking of the city was part of Iran's Operation Beit ol-Moqaddas. It is perceived as a turning point in the war; and the liberation of the city is annually celebrated in Iran on 24 May.

The First Battle of Khorramshahr was a major battle in the Iran–Iraq War, beginning shortly after the Iraqi invasion of Iran in September 1980. Amidst the gruelling urban warfare in and around the city, Khorramshahr came to be referred to by the Iranians as Khuninshahr, as both sides had suffered heavy casualties in combat. It was the single largest urban battle of the Iran–Iraq war.