The following highways are numbered 180:
Australia Pyrenees Highway
Canada New Brunswick Route 180 Prince Edward Island Route 180 Winnipeg Route 180
Costa Rica National Route 180
Ireland
R180 road (Ireland)
Japan Japan National Route 180
Malaysia
A180 road (Malaysia) (Jalan Ayer Hitam Labu) North–South Port Link (Federal Route 180)
Mexico Mexican Federal Highway 180 Mexican Federal Autopista 180D
Russia
A180 highway (Russia)
United Kingdom
road motorway B180 road
United States Interstate 180 (multiple highways) U.S. Route 180 Alabama State Route 180 Arizona State Route 180A Arkansas Highway 180 California State Route 180 Florida State Road 180 (former) Georgia State Route 180 Hawaii Route 180 Illinois Route 180 K-180 (Kansas highway) (former) Kentucky Route 180 Louisiana Route 180 Maine State Route 180 Maryland Route 180 M-180 (Michigan highway) (former) Missouri Route 180 New Jersey Route 180 (former) New York State Route 180 North Carolina Highway 180 Ohio State Route 180 Oregon Route 180 Tennessee State Route 180 Texas State Highway 180 Texas State Highway Spur 180 Farm to Market Road 180 (Texas) Utah State Route 180 Virginia State Route 180 West Virginia Route 180 Wisconsin Highway 180 Territories Puerto Rico Highway 180