# List of highways numbered 51

The following highways are numbered 51:

## Australia

* Kamilaroi Highway
* Plenty Road

## Cambodia

* National Road 51 (Cambodia)

## Canada

* Alberta Highway 51 (defunct)
* Saskatchewan Highway 51

## Cuba

* Caimito–Salado Road (2–51)

## Finland

* Finnish national road 51

## France

* A51 autoroute

## Greece

* EO51 road

## Hungary

* M51 expressway (Hungary)

## India

* National Highway 51 (India)

## Iran

* Zobahan Freeway
* Road 51

## Italy

* Autostrada A51

## Japan

* Japan National Route 51

## Korea, South

* National Route 51 [ko]

## Lebanon

* 51M Coastal Highway

## New Zealand

* New Zealand State Highway 51

## Philippines

* N51 highway (Philippines)

## South Africa

* R51

## Turkey

* O-51, a motorway in Turkey running from Adana to Mersin.

## United Kingdom

* British A51 (Kingsbury-Chester)

## United States

* U.S. Route 51
* Alabama State Route 51
* Arizona State Route 51
* Arkansas Highway 51
* California State Route 51 (unsigned)
* Colorado State Highway 51 (1923-1968) (former)
* Florida State Road 51
** County Road 51 (Hamilton County, Florida)
* Georgia State Route 51
** Georgia State Route 51 (1920) (former)
* Hawaii Route 51
* Idaho State Highway 51
* Illinois Route 51 (former)
* Indiana State Road 51
* Iowa Highway 51
* K-51 (Kansas highway)
* Maryland Route 51
** Maryland Route 51A
** Maryland Route 51B (former)
** Maryland Route 51C (former)
** Maryland Route 51D
** Maryland Route 51E
** Maryland Route 51F
* M-51 (Michigan highway)
* Minnesota State Highway 51
** County Road 51 (Anoka County, Minnesota)
** County Road 51 (Ramsey County, Minnesota)
* Missouri Route 51
* Nebraska Highway 51
** Nebraska Link 51A
** Nebraska Link 51B
** Nebraska Link 51C
** Nebraska Recreation Road 51E
** Nebraska Recreation Road 51F
** Nebraska Recreation Road 51G
** Nebraska Recreation Road 51H
* Nevada State Route 51
* New Hampshire Route 51
* New Jersey Route 51 (former)
** County Route 51 (Bergen County, New Jersey)
*** County Route S51 (Bergen County, New Jersey)
** County Route 51 (Monmouth County, New Jersey)
* New Mexico State Road 51
* New York State Route 51
** County Route 51 (Cayuga County, New York)
** County Route 51 (Dutchess County, New York)
** County Route 51 (Erie County, New York)
** County Route 51 (Essex County, New York)
** County Route 51 (Franklin County, New York)
** County Route 51 (Greene County, New York)
** County Route 51 (Herkimer County, New York)
** County Route 51 (Madison County, New York)
** County Route 51 (Oneida County, New York)
** County Route 51 (Orange County, New York)
** County Route 51 (Putnam County, New York)
** County Route 51 (Rensselaer County, New York)
** County Route 51 (Rockland County, New York)
** County Route 51 (Saratoga County, New York)
** County Route 51 (Schoharie County, New York)
** County Route 51 (Suffolk County, New York)
** County Route 51 (Sullivan County, New York)
** County Route 51 (Ulster County, New York)
* North Carolina Highway 51
* Ohio State Route 51
* Oklahoma State Highway 51
** Oklahoma State Highway 51A
** Oklahoma State Highway 51B
* Oregon Route 51
* Pennsylvania Route 51
* Rhode Island Route 51
* South Carolina Highway 51
* Tennessee State Route 51
* Texas State Highway 51
** Texas State Highway Spur 51
** Farm to Market Road 51
** Texas Park Road 51
* Utah State Route 51
* Virginia State Route 51
** Virginia State Route 51 (1928-1950) (former)
* West Virginia Route 51
** West Virginia Route 51 (1920s) (former)
** West Virginia Route 51 (1930s) (former)
* Wisconsin Highway 51 (former)
* Wyoming Highway 51

## Vietnam

* National Road 51 (Vietnam)