Route 23, or Highway 23, can refer to:

International

• European route E23

Australia

• Federal Highway (Australia)

• Monaro Highway

• (South Australia)

• Dorat Road (not signed everywhere)

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

Cuba

Highway I–23

• Highway 4–I–23

• Highway 5–I–23

• Highway 6–I–23

• Highway 2–23

Czech Republic

• I/23 Highway; Czech: Silnice I/23

Finland

• Finnish national road 23

Greece

• A23 expressway, a limited-access road from Komotini to the Makaza pass

India

• National Highway 23 (India)

Ireland

• N23 road (Ireland)

Israel

• Highway 23

Italy

• Autostrada A23

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 (Brighton-London)

• M23 (Crawley-Marling Glen)

• A23 road (Northern Ireland)

United States

• U.S. Route 23

Alabama State Route 23

• County Route 23 (Lee County, Alabama)

Arkansas Highway 23

• Arkansas Highway 23W (former)

California State Route 23

• County Route A23 (California)

• County Route J23 (California)

• 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

• Louisiana State Route 23

• Maine State Route 23

Maryland Route 23

• Maryland Route 23B (former)

• Massachusetts Route 23

• M-23 (Michigan highway) (former)

Minnesota State Highway 23

• County Road 23 (Anoka County, Minnesota)

• County Road 23 (Dakota County, Minnesota)

• County Road 23 (Ramsey County, Minnesota)

• Mississippi Highway 23

Missouri Route 23

• Missouri Route 23 (1922) (former)

• Montana Highway 23

• Nebraska Highway 23

• Nevada State Route 23 (former)

New Jersey Route 23

• County Route 23 (Monmouth County, New Jersey)

• New Mexico State Road 23

New York State Route 23

• County Route 23 (Allegany County, New York)

• County Route 23 (Cattaraugus County, New York)

• County Route 23 (Cayuga County, New York)

• County Route 23 (Clinton County, New York)

• County Route 23 (Dutchess County, New York)

• County Route 23 (Genesee County, New York)

• County Route 23B (Greene County, New York)

• County Route 23C (Greene County, New York)

• County Route 23 (Herkimer County, New York)

• County Route 23 (Lewis County, New York)

• County Route 23 (Livingston County, New York)

• County Route 23 (Niagara County, New York)

• County Route 23 (Onondaga County, New York)

• County Route 23 (Orange County, New York)

• County Route 23 (Oswego County, New York)

• County Route 23 (Otsego County, New York)

• County Route 23 (Putnam County, New York)

• County Route 23 (Rensselaer County, New York)

• County Route 23 (Rockland County, New York)

• County Route 23 (Schuyler County, New York)

• County Route 23 (St. Lawrence County, New York)

• County Route 23 (Suffolk County, New York)

• County Route 23 (Sullivan County, New York)

• County Route 23 (Tioga County, New York)

• County Route 23 (Warren County, New York)

• County Route 23 (Washington County, New York)

• North Carolina Highway 23 (former)

North Dakota Highway 23

• North Dakota Highway 23B (McKenzie County)

• North Dakota Highway 23B (Mountrail County)

• Ohio State Route 23 (1923-1927) (former)

• Oklahoma State Highway 23

• Oregon Route 23 (former)

• Pennsylvania Route 23

• South Carolina Highway 23

• South Dakota Highway 23 (former)

• Tennessee State Route 23

Texas State Highway 23

• Texas State Highway Loop 23 (former)

• Texas State Highway Spur 23 (former)

• Farm to Market Road 23

• Texas Park Road 23

• Utah State Route 23

• Vermont Route 23

• State Route 23 (Virginia 1918-1933) (former)

• Washington State Route 23

• West Virginia Route 23

• Wisconsin Highway 23

• Territories

• Puerto Rico Highway 23

See also

• List of A23 roads

• List of highways numbered 23A