The Salem Maritime National Historic Site is a National Historic Site consisting of 12 historic structures, one replica tall-ship, and about 9 acres of land along the waterfront of Salem Harbor in Salem, Massachusetts, United States. Salem Maritime is the first National Historic Site established in the United States. It interprets the Triangle Trade during the colonial period, in cotton, rum, sugar and slaves; the actions of privateers during the American Revolution; and global maritime trade with the Far East, after independence. The National Park Service manages both the National Historic Site and a Regional Visitor Center in downtown Salem. The National Park Service (NPS) is an agency of the United States Department of the Interior.

National Historic Site (NHS) and National Historical Park (NHP) are designations for officially recognized areas of national historic significance in the United States. They are usually owned and managed by the federal government. An NHS usually contains a single historical feature directly associated with its subject, while an NHP is an area that generally extends beyond single properties or buildings to include a mix of historic and later structures and sometimes significant natural features.