List of highways numbered 23

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

 * A23-AT.svg Autobahn Südosttangente Wien

Canada

 * Alberta Highway 23.svg Alberta Highway 23
 * BC-23.svg British Columbia Highway 23
 * Manitoba Highway 23.svg Manitoba Highway 23
 * Ontario 23.svg Ontario Highway 23
 * PEI Highway 23.svg Prince Edward Island Route 23
 * Saskatchewan Highway 23 (jct).svg Saskatchewan Highway 23

Costa Rica

 * CR RNP 23.svg National Route 23

Czech Republic

 * SilniceI23.svgCZ_traffic_sign_IS17_-_E551.svg I/23 Highway; Czech: Silnice I/23

Finland

 * Finland road sign F29-23.svg Finnish national road 23

India

 * NH23-IN.svg National Highway 23 (India)

Ireland

 * IRL N23.svg N23 road (Ireland)

Italy

 * Autostrada A23 Italia.svg Autostrada A23

Japan

 * Japanese National Route Sign 0023.svg Japan National Route 23
 * JP Expressway E23.svg Higashi-Meihan Expressway
 * JP Expressway E23.svg Ise Expressway

Korea, South

 * Korea National Route No.23.svg National Route 23
 * Gukjido 23

Malaysia

 * Malaysia Federal Route 23

Mexico

 * Mexican Federal Highway 23

New Zealand

 * State Highway 23 NZ.svg State Highway 23

Norway

 * Riksvei 23.svg Norwegian National Road 23

United Kingdom

 * UK road A23.svg British A23 (Brighton-London)
 * UK-Motorway-M23.svg M23 (Crawley-Marling Glen)
 * UK_road_A23.svg A23 road (Northern Ireland)

United States

 * US 23.svg U.S. Route 23
 * Alabama 23.svg Alabama State Route 23
 * Arkansas 23.svg Arkansas Highway 23
 * Arkansas 23W.svg Arkansas Highway 23W (former)
 * California 23.svg California State Route 23
 * CR A23 jct.svg County Route A23 (California)
 * CR J23 jct.svg County Route J23 (California)
 * Colorado 23.svg Colorado State Highway 23
 * Elongated circle 23.svg Delaware Route 23
 * Florida 23.svg Florida State Road 23
 * Georgia 23.svg Georgia State Route 23
 * Illinois 23.svg Illinois Route 23
 * Indiana 23.svg Indiana State Road 23
 * Circle sign 23.svg Iowa Highway 23
 * K-23.svg K-23 (Kansas highway)
 * Louisiana 23.svg Louisiana Highway 23
 * Louisiana 23 (1924).svg Louisiana State Route 23
 * MA Route 23.svg Maine State Route 23
 * MD Route 23.svg Maryland Route 23
 * Maryland Route 23B (former)
 * MA Route 23.svg Massachusetts Route 23
 * M-23.svg M-23 (Michigan highway) (former)
 * MN-23.svg Minnesota State Highway 23
 * Anoka County 23.svg County Road 23 (Anoka County, Minnesota)
 * Dakota County Route 23.svg County Road 23 (Dakota County, Minnesota)
 * CR 23 jct.svg County Road 23 (Ramsey County, Minnesota)
 * Circle sign 23.svg Mississippi Highway 23
 * MO-23.svg Missouri Route 23
 * Missouri Route 23 (1922) (former)
 * MT-23.svg Montana Highway 23
 * N-23.svg Nebraska Highway 23
 * Nevada 23.svg Nevada State Route 23 (former)
 * Circle sign 23.svg New Jersey Route 23
 * Monmouth County Route 23 NJ.svg County Route 23 (Monmouth County, New Jersey)
 * New Mexico 23.svg New Mexico State Road 23
 * NY-23.svg New York State Route 23
 * CR 23 jct.svg County Route 23 (Allegany County, New York)
 * CR 23 jct.svg County Route 23 (Cattaraugus County, New York)
 * CR 23 jct.svg County Route 23 (Cayuga County, New York)
 * Clinton County Route 23 NY.svg County Route 23 (Clinton County, New York)
 * Dutchess County Route 23 NY.svg County Route 23 (Dutchess County, New York)
 * CR 23 jct.svg County Route 23 (Genesee County, New York)
 * CR 23B jct.svg County Route 23B (Greene County, New York)
 * CR 23C jct.svg County Route 23C (Greene County, New York)
 * CR 23 jct.svg County Route 23 (Herkimer County, New York)
 * CR 23 jct.svg County Route 23 (Lewis County, New York)
 * Livingston County Route 23 NY.svg County Route 23 (Livingston County, New York)
 * CR 23 jct.svg County Route 23 (Niagara County, New York)
 * CR 23 jct.svg County Route 23 (Onondaga County, New York)
 * CR 23 jct.svg County Route 23 (Orange County, New York)
 * CR 23 jct.svg County Route 23 (Oswego County, New York)
 * CR 23 jct.svg County Route 23 (Otsego County, New York)
 * Putnam County Route 23 NY.svg County Route 23 (Putnam County, New York)
 * Rensselaer County Route 23 NY.svg County Route 23 (Rensselaer County, New York)
 * Rockland County Route 23 NY.svg County Route 23 (Rockland County, New York)
 * Schuyler County Route 23 NY.svg County Route 23 (Schuyler County, New York)
 * CR 23 jct.svg County Route 23 (St. Lawrence County, New York)
 * Suffolk County Route 23 NY.svg County Route 23 (Suffolk County, New York)
 * Sullivan County Route 23 NY.svg County Route 23 (Sullivan County, New York)
 * CR 23 jct.svg County Route 23 (Tioga County, New York)
 * Warren County Route 23 NY.svg County Route 23 (Warren County, New York)
 * Washington County Route 23 NY.svg County Route 23 (Washington County, New York)
 * NC 23.svg North Carolina Highway 23 (former)
 * ND-23 (2015).svg North Dakota Highway 23
 * ND-23B (2015).svg North Dakota Highway 23B (McKenzie County)
 * ND-23B (2015).svg North Dakota Highway 23B (Mountrail County)
 * OH-23 (1920).svg Ohio State Route 23 (1923-1927) (former)
 * Oklahoma State Highway 23.svg Oklahoma State Highway 23
 * OR 23 1948.svg Oregon Route 23 (former)
 * PA-23.svg Pennsylvania Route 23
 * South Carolina 23.svg South Carolina Highway 23
 * SD 23.svg South Dakota Highway 23 (former)
 * Tennessee 23.svg Tennessee State Route 23
 * Texas 23.svg Texas State Highway 23
 * Texas Loop 23.svg Texas State Highway Loop 23 (former)
 * Texas Spur 23.svg Texas State Highway Spur 23 (former)
 * Texas FM 23.svg Farm to Market Road 23
 * Texas Park Road 23.svg Texas Park Road 23
 * Utah SR 23.svg Utah State Route 23
 * Circle sign 23.svg Vermont Route 23
 * Virginia 23.svg State Route 23 (Virginia 1918-1933) (former)
 * WA-23.svg Washington State Route 23
 * WV-23.svg West Virginia Route 23
 * WIS 23.svg Wisconsin Highway 23


 * Territories
 * PR urban primary 23.svg Puerto Rico Highway 23