List of highways numbered 23

International

• European route E23

  Australia

• Federal Highway
• Monaro Highway

  Austria

• Autobahn Südosttangente Wien

  Canada

• Alberta Highway 23
• British Columbia Highway 23
• Manitoba Highway 23
• Ontario Highway 23
• Prince Edward Island Route 23
• Saskatchewan Highway 23

  Costa Rica

• National Route 23

  Czech Republic

• I/23 Highway; Czech: :cz:Silnice I/23|Silnice I/23

  India

• National Highway 23

  Japan

• Japan National Route 23
• Higashi-Meihan Expressway
• Ise Expressway

  Korea, South

• National Route 23
• Gukjido 23

  Malaysia

• Malaysia Federal Route 23

  Mexico

• Mexican Federal Highway 23

  New Zealand

• State Highway 23

  Norway

• Norwegian National Road 23

  United Kingdom

• British A23
• M23

  United States

• U.S. Route 23
• Alabama State Route 23
• Arkansas Highway 23
• * Arkansas Highway 23W
• California State Route 23
• * County Route A23
• * County Route J23
• Colorado State Highway 23
• Delaware Route 23
• Florida State Road 23
• Georgia State Route 23
• Illinois Route 23
• Indiana State Road 23
• Iowa Highway 23
• K-23
• Louisiana Highway 23
• * Louisiana State Route 23
• Maine State Route 23
• Maryland Route 23
• *Maryland Route 23B
• Massachusetts Route 23
• M-23
• Minnesota State Highway 23
• * County Road 23
• * County Road 23
• * County Road 23
• Mississippi Highway 23
• Missouri Route 23
• *Missouri Route 23
• Montana Highway 23
• Nebraska Highway 23
• Nevada State Route 23
• New Jersey Route 23
• * County Route 23
• New Mexico State Road 23
• New York State Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23B
• * County Route 23C
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• * County Route 23
• North Carolina Highway 23
• North Dakota Highway 23
• * North Dakota Highway 23B
• * North Dakota Highway 23B
• Ohio State Route 23
• Oklahoma State Highway 23
• Oregon Route 23
• Pennsylvania Route 23
• South Carolina Highway 23
• South Dakota Highway 23
• Tennessee State Route 23
• Texas State Highway 23
• * Texas State Highway Loop 23
• * Texas State Highway Spur 23
• * Farm to Market Road 23
• * Texas Park Road 23
• Utah State Route 23
• Vermont Route 23
• State Route 23
• Washington State Route 23
• West Virginia Route 23
• Wisconsin Highway 23

• Puerto Rico Highway 23