The Forbes Expedition was a British military campaign to capture Fort Duquesne, led by Brigadier-General John Forbes in 1758, during the French and Indian War. While advancing to the fort, the expedition built the Forbes Road. The Treaty of Easton served to cause a loss of Native American support for the French, resulting in the French destroying the fort before the expedition could arrive on November 24.

Fort Duquesne was a fort established by the French in 1754, at the confluence of the Allegheny and Monongahela rivers. It was later taken over by the British, and later the Americans, and developed as Pittsburgh in the U.S. state of Pennsylvania. Fort Duquesne was destroyed by the French before its British conquest during the Seven Years' War, known as the French and Indian War on the North American front. The British replaced it, building Fort Pitt between 1759 and 1761. The site of both forts is now occupied by Point State Park, where the outlines of the two forts have been laid in brick.