List of highways numbered 23

Route 23, or Highway 23, can refer to:

International

• European route E23

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

Czech Republic

• I/23 Highway; Czech: Silnice I/23

India

23

National Highway 23 (India)

Japan

• Japan National Route 23

Korea, South

• National Route 23
• Gukjido 23

Mexico

• Mexican Federal Highway 23

New Zealand

• State Highway 23

United Kingdom

• British A23 (Brighton-London)
• M23 (Crawley-Marling Glen)

United States

• U.S. Route 23
• Alabama State Route 23
• Arkansas Highway 23
  • Arkansas Highway 23W (former)
• California State Route 23
• 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 (Kansas highway)
• Louisiana Highway 23
• Maine State Route 23
• Maryland Route 23
• Massachusetts Route 23
• M-23 (Michigan highway) (former)
• Minnesota State Highway 23
• Mississippi Highway 23
• Missouri Route 23
  • Missouri Route 23 (1922)
• Montana Highway 23
• Nebraska Highway 23
• Nevada State Route 23 (former)
• New Jersey Route 23
• New Mexico State Road 23
• New York State Route 23
• North Carolina Highway 23 (former)
• North Dakota Highway 23
• Oklahoma State Highway 23
• Oregon Route 23 (former)
• Pennsylvania Route 23
• South Carolina Highway 23 (former)
• South Dakota Highway 23 (former)
• Tennessee State Route 23
• Texas State Highway 23
  • Texas State Highway Loop 23 (former)
  • Texas Farm to Market Road 23
  • Texas Park Road 23
• Utah State Route 23
• Vermont Route 23
• Virginia State Route 23 (former)
• Washington State Route 23
• West Virginia Route 23
• Wisconsin Highway 23

Other areas:

• Puerto Rico Highway 23
• Portugal Highway 23 (A23) connecting Torres Novas to Guarda