Route 155 or Highway 155 may refer to:
Canada Prince Edward Island Route 155 (Thompson Road) Quebec Route 155 Saskatchewan Highway 155 Winnipeg Route 155
Costa Rica National Route 155
Japan Japan National Route 155
United Kingdom road B155 road
United States Interstate 155 U.S. Route 155 (former proposal) Alabama State Route 155 Arkansas Highway 155 California State Route 155 Connecticut Route 155 Florida State Road 155 Georgia State Route 155 Illinois Route 155 Kentucky Route 155 Louisiana Highway 155 Maine State Route 155 Maryland Route 155 M-155 (Michigan highway) New Hampshire Route 155 New Hampshire Route 155A New Jersey Route 155 (former) New York State Route 155 Ohio State Route 155 Pennsylvania Route 155 Tennessee State Route 155 Texas State Highway 155 Texas State Highway Loop 155 Farm to Market Road 155 (Texas) Utah State Route 155 Vermont Route 155 Virginia State Route 155 Washington State Route 155 Wisconsin Highway 155 Territories Puerto Rico Highway 155