- a gallery or passage connecting parts of a building; hallway.
- a passage into which several rooms or apartments open.
- a passageway in a passenger ship or railroad car permitting access to separate cabins or compartments.
- a narrow tract of land forming a passageway, as one connecting two major cities or one belonging to an inland country and affording an outlet to the sea: the Polish Corridor.
- a usually densely populated region characterized by one or more well-traveled routes used by railroad, airline, or other carriers: The Northeast corridor extends from Washington, D.C., to Boston.
- a restricted path along which an aircraft must travel to avoid hostile action, other air traffic, etc.
- a carefully calculated path through the atmosphere along which a space vehicle must travel after launch or during reentry in order to attain a desired orbit, to avoid severe acceleration and deceleration, or to minimize aerodynamic heating.
- a hallway or passage connecting parts of a building
- a strip of land or airspace along the route of a road or river
- a strip of land or airspace that affords access, either from a landlocked country to the sea (such as the Polish corridor, 1919-39, which divided Germany) or from a state to an exclave (such as the Berlin corridor, 1945–90, which passed through the former East Germany)
- a passageway connecting the compartments of a railway coach
- the higher echelons of government, the Civil Service, etc, considered as the location of power and influence
- a flight path that affords safe access for intruding aircraft
- the path that a spacecraft must follow when re-entering the atmosphere, above which lift is insufficient and below which heating effects are excessive
