# List of highways numbered 23

Route 23, or Highway 23, can refer to:

## International

* E23 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 road, 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

* FT 23Malaysia 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
* 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