Highway 103 can refer to multiple roads:
Belgium N103 (Belgium)
Canada New Brunswick Route 103 Nova Scotia Provincial Highway 103 Ontario Highway 103 (former) Prince Edward Island Route 103
China China National Highway 103
Costa Rica National Route 103
Croatia D103 road
Germany Bundesautobahn 103
India National Highway 103 (India)
Ireland R103 road (Ireland)
Japan Japan National Route 103
Nigeria F103 highway (Nigeria)
Philippines N103 highway (Philippines)
South Africa R103 (South Africa)
United Kingdom road in north London.
United States Alabama State Route 103 County Route 103 (Lee County, Alabama) Arkansas Highway 103 California State Route 103 Colorado State Highway 103 Connecticut Route 103 Florida State Road 103 County Road 103 (Duval County, Florida) Georgia State Route 103 Illinois Route 103 Indiana State Road 103 Iowa Highway 103 (former) K-103 (Kansas highway) Kentucky Route 103 Louisiana Highway 103 Maine State Route 103 Maryland Route 103 Maryland Route 103A Maryland Route 103C Massachusetts Route 103 M-103 (Michigan highway) Minnesota State Highway 103 (former) County Road 103 (Hennepin County, Minnesota) Missouri Route 103 Nebraska Highway 103 New Hampshire Route 103 New Hampshire Route 103A County Route 103 (Ocean County, New Jersey) New Mexico State Road 103 New York State Route 103 County Route 103 (Albany County, New York) County Route 103 (Cayuga County, New York) County Route 103 (Cortland County, New York) County Route 103 (Dutchess County, New York) County Route 103 (Fulton County, New York) County Route 103 (Montgomery County, New York) County Route 103 (Onondaga County, New York) County Route 103 (Orleans County, New York) County Route 103 (Rensselaer County, New York) County Route 103 (Steuben County, New York) County Route 103 (Suffolk County, New York) County Route 103 (Sullivan County, New York) County Route 103 (Tompkins County, New York) County Route 103A (Tompkins County, New York) County Route 103B (Tompkins County, New York) County Route 103 (Wayne County, New York) County Route 103 (Westchester County, New York) North Carolina Highway 103 Ohio State Route 103 Oklahoma State Highway 103 (former) Oregon Route 103 Pennsylvania Route 103 Rhode Island Route 103 Rhode Island Route 103A Tennessee State Route 103 Texas State Highway 103 Texas State Highway Spur 103 (former) Farm to Market Road 103 Utah State Route 103 Vermont Route 103 Virginia State Route 103 Virginia State Route 103 (1928-1933) (former) Washington State Route 103 West Virginia Route 103 Wisconsin Highway 103
Territories Puerto Rico Highway 103
See also A103