The Colonial Annapolis Historic District is a historic district in the City of Annapolis, the state capital of Maryland, that was designated a National Historic Landmark District in 1965 and was geographically further expanded in 1984.

A National Historic Landmark District (NHLD) is a geographical area that has received recognition from the United States Government that the buildings, landscapes, cultural features and archaeological resources within it are of the highest significance and worthy of preservation.