List of highways numbered 103

Canada

• New Brunswick Route 103
• Nova Scotia Provincial Highway 103
• Ontario Highway 103
• Prince Edward Island Route 103

  China

• China National Highway 103

  Costa Rica

• National Route 103

  India

• National Highway 103

  Japan

• Route 103

  United States

• Alabama State Route 103
• Arkansas Highway 103
• California State Route 103
• Colorado State Highway 103
• Connecticut Route 103
• Florida State Road 103
• * County Road 103
• Georgia State Route 103
• Illinois Route 103
• Indiana State Road 103
• Iowa Highway 103
• K-103
• Kentucky Route 103
• Louisiana Highway 103
• Maine State Route 103
• Maryland Route 103
• *Maryland Route 103A
• *Maryland Route 103C
• Massachusetts Route 103
• M-103
• Minnesota State Highway 103
• * County Road 103
• Missouri Route 103
• Nebraska Highway 103
• New Hampshire Route 103
• * New Hampshire Route 103A
• County Route 103
• New Mexico State Road 103
• New York State Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• * County Route 103
• ** County Route 103A
• ** County Route 103B
• * County Route 103
• * County Route 103
• North Carolina Highway 103
• Ohio State Route 103
• Oklahoma State Highway 103
• 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
• * Farm to Market Road 103
• Utah State Route 103
• Vermont Route 103
• Virginia State Route 103
• * Virginia State Route 103
• Washington State Route 103
• West Virginia Route 103
• Wisconsin Highway 103

• Puerto Rico Highway 103