A corridor is a long and narrow passageway covered by a roof, often connected to buildings such as gardens, temples, and palaces.

When referred to as a building, the corridor typically denotes a narrow, elongated structure with a roof, which can connect the main building and other structures or landscapes, serving to link different areas and provide shelter. Corridors are commonly found in traditional Chinese gardens, palaces, ancient dwellings, and also in the architecture of many other cultural regions, such as Japanese gardens and royal tombs. Corridors often feature highly decorative carvings, colored paintings, murals, and other artistic techniques, making them significant attractions within certain buildings.