Lord Edward's crusade, sometimes called the Ninth Crusade, was a military expedition to the Holy Land under the command of Edward, Duke of Gascony (future King Edward I of England) in 1271–1272. It was an extension of the Eighth Crusade and was the last of the Crusades to reach the Holy Land before the fall of Acre in 1291 brought an end to the permanent crusader presence there.

The Ninth Crusade saw Edward clash with Baibars, with both achieving limited victories. The Crusaders were ultimately forced to withdraw since Edward had pressing concerns at home and felt unable to resolve the internal conflicts within the remnant Outremer territories. It is arguable that the Crusading spirit was nearly "extinct" by this period as well. It also foreshadowed the imminent collapse of the last remaining crusader strongholds along the Mediterranean coast.