Harbor Tunnel

Harbour Tunnel or Harbor Tunnel may refer to:

Australia

 * Sydney Harbour Tunnel, New South Wales
 * Western Harbour Tunnel, New South Wales

Hong Kong

 * Cross-Harbour Tunnel, Hong Kong

United States

 * Baltimore Harbor Tunnel and associated Harbor Tunnel Thruway, Maryland
 * Cross-Harbor Rail Tunnel in New York Harbor between New York and New Jersey
 * Ted Williams Tunnel (also known as Third Harbor Tunnel) in Boston Harbor, Massachusetts