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
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Canada
- Alberta Highway 23
- British Columbia Highway 23
- Manitoba Highway 23
Ontario Highway 23- Prince Edward Island Route 23
- Saskatchewan Highway 23
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Costa Rica
National Route 23
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Czech Republic
I/23 Highway; Czech: Silnice I/23
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India
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23
National Highway 23 (India)
Japan
Japan National Route 23.png)
Higashi-Meihan Expressway- Ise Expressway
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Korea, South
National Route 23- Gukjido 23
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Malaysia
Mexico
- Mexican Federal Highway 23
New Zealand
State Highway 23
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Norway
Norwegian National Road 23
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United Kingdom
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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 .svg.png)
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
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).svg.png)
North Dakota Highway 23 .svg.png)
North Dakota Highway 23B (McKenzie County)- North Dakota Highway 23B (Mountrail County)
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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
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- Territories
Puerto Rico Highway 23
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See also
- List of A23 roads
- List of highways numbered 23A
| Previous | Lists of highways | Next |
|---|---|---|
| 22 | 23 | 24 |