''For roads named A21 see ;

List of A21 roads This is a list of roads designated A21. Roads are sorted in the countries' alphabetical order. * A21 road (Australia), a road in South Australia * A21 (Toowoomba, QLD) * A21 motorway (Austria), a road connecting Altlengbach and the A1 to Vösen ...

''
Route 21, or Highway 21, can refer to:

International

European route E21 European route E21 is a series of roads in Europe, part of the United Nations International E-road network. It runs from Metz, France to Geneva, Switzerland. It meets the European route E25, the E50 and the E411 at Metz, from where it departs. ...

Australia

Chandler Highway The Chandler Highway is a short road in the inner eastern suburbs of Melbourne. It runs from Heidelberg Road in Alphington, crosses the Yarra River, then continues across the Eastern Freeway, then terminates at an intersection with Princess St ...

Toowoomba Connection Road The Toowoomba Connection Road is a former section of the Warrego Highway that passes through the city of Toowoomba in Queensland, Australia. With the opening of the Toowoomba Bypass in 2019 the Warrego Highway was redirected to it, and the byp ...

(QLD) * -

Kakadu Highway The Kakadu Highway is 209 kilometres long and extends from Pine Creek to Jabiru, entering Kakadu National Park as the highway crosses the Mary River. The highway is signed and mapped as State Route 21. Wiener Außenring Autobahn

Cambodia

* National Road 21 (Cambodia)

Canada

Alberta Highway 21 Alberta Provincial Highway No. 21, commonly referred to as Highway 21, is a north–south highway in Alberta, Canada that parallels Highway 2 between Calgary and Edmonton. It is approximately in length. It begins at the Trans- ...

British Columbia Highway 21 Highway 21 is a cross-border spur in the Regional District of Central Kootenay in British Columbia. First opened in 1964, the highway travels 14 km (9 mi) northwest along the Kootenay River from its connection with Idaho State Highway ...

Manitoba Highway 21 Provincial Trunk Highway 21 (PTH 21) is a provincial highway in the Canadian province of Manitoba. It runs from the U.S. border (where it meets with ND 14) to PTH 45 and PR 577 in the village of Oakburn. PTH 21 is two lanes and runs north– ...

Newfoundland and Labrador Route 21 Route 21, also known as Bauline Line, is a north-south highway on the Avalon Peninsula of Newfoundland in the Canadian province of Newfoundland and Labrador. It serves to connect the towns of Torbay and Bauline. The naming of transit routes le ...

Ontario Highway 21 King's Highway 21, commonly referred to as Highway 21, is a provincially maintained highway in the Canadian province of Ontario that begins at Highway 402 midway between Sarnia and London and ends at Highway 6, Highway 10 and Highway 26 ...

Prince Edward Island Route 21 Route 21, also known as Bunbury Road and Fort Augustus Road, is a , two-lane, uncontrolled-access, secondary highway in central Prince Edward Island. Its western terminus is at Route 1 in Southport and its eastern terminus is at Route 323 in Fa ...

Saskatchewan Highway 21 Highway 21 is a highway in the Canadian province of Saskatchewan. It runs from Montana Secondary Highway 233 at the United States border near Willow Creek to Highway 950/ Highway 919 within the Meadow Lake Provincial Park. Highway 21 is about ...

Costa Rica

National Route 21

Czech Republic

I/21

Highway A highway is any public or private road or other public way on land. It is used for major roads, but also includes other public roads and public tracks. In some areas of the United States, it is used as an equivalent term to controlled-access ...

; Czech: Silnice I/21

Hungary

Main road 21 (Hungary) The Main road 21 is a south–north direction First class main road in the road in the valley of a Zagyva river, that connects the M3 motorway's Hatvan junction to the, facilitating access from the capital city of Hatvan to Salgótarján- Somosk ...

India

National Highway 21 (India) National Highway 21 (NH 21) is a primary national highway in India. This highway connects Jaipur in Rajasthan to Agra and Bareilly in Uttar Pradesh This national highway is long. Route * Jaipur to Bharatpur * Bharatpur to Agra * Agra to S ...

Iran

Road 21

Ireland

N21 road (Ireland) The N21 road is a national primary road in Republic of Ireland, Ireland. The route runs from the M20 motorway (Ireland), M20 outside Limerick to Tralee with connecting roads to other parts of County Kerry. It is in length. It runs through th ...

Italy

Autostrada A21

Japan

Japan National Route 21 is a national highway connecting Mizunami, Gifu Prefecture and Maibara, Shiga Prefecture in Japan. Route data *Length: *Origin: Mizunami (originates at junction with Route 19) *Terminus: Maibara (ends at Junction with Route 8) *Major citi ...

Korea, South

National Route 21

Moldova

M21 highway (Moldova)

New Zealand

New Zealand State Highway 21

Paraguay

* National Route 21

Turkey

, a motorway in

Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...

running from

Kemerhisar Kemerhisar is a belde (town) in Niğde Province, Turkey Geography Kemerhisar at is a part of Bor district of Niğde Province. Distance to Bor is and to Niğde is . It is only west of Bahçeli another town of Niğde. The population is 5, ...

Niğde Province Niğde Province ( tr, ) is a Provinces of Turkey, province in the southern part of Central Anatolia, Turkey. Population is 341,412 (2013 est) of which 141,360 live in the city of Niğde. The population was 348,081 in 2000 and 305,861 in 1990. It ...

to Tarsus,

Mersin Province Mersin Province ( tr, ), formerly İçel Province ( tr, ), is a province in southern Turkey, on the Mediterranean coast between Antalya and Adana. The provincial capital and the biggest city in the province is Mersin, which is composed of fo ...

United Kingdom

British A21 (Hastings-London) * UK_road_A21

A21 road (Northern Ireland)

United States

U.S. Route 21 U.S. Route 21 or U.S. Highway 21 (US 21) is a major north–south United States Numbered Highway in the Southeastern United States that travels . The southern terminus is in Hunting Island State Park, South Carolina, south of the ...

Alabama State Route 21 State Route 21 (SR 21) is a State highway (US), state highway that extends from the Florida state line, near Atmore, Alabama, Atmore in Escambia County, Alabama, Escambia County to Piedmont, Alabama, Piedmont in Calhoun County, Alabama ...

Arkansas Highway 21 Highway 21 (AR 21, Ark. 21, and Hwy. 21) is a north–south state highway in north central Arkansas. The route of runs from US Route 64 (US 64) in Clarksville north across US 62 to Missouri Route 13 at the Missouri state line The route is ...

Arkansas Highway 21E (former) ** Arkansas 21W

Arkansas Highway 21W (former) * California 21

California State Route 21 Interstate 680 (I-680) is a north–south auxiliary Interstate Highway in Northern California. It curves around the eastern cities of the San Francisco Bay Area from San Jose to I-80 at Fairfield, bypassing cities along the eastern shore ...

(former) ** CR A21 jct

County Route A21 (California) There are 28 routes assigned to the "A" zone of the California Route Marker Program, which designates county routes in California. The "A" zone includes county highways in Lassen, Plumas, Shasta, Siskiyou, and Tehama counties. A1 County Ro ...

County Route E21 (California) ** CR G21 jct

County Route G21 (California) There are 21 routes assigned to the "G" zone of the California Route Marker Program, which designates county routes in California. The "G" zone includes county highways in Monterey, San Benito, San Luis Obispo, Santa Clara, and Santa Cruz cou ...

County Route J21 (California) There are 45 routes assigned to the "J" zone of the California Route Marker Program, which designates county routes in California. The "J" zone includes county highways in Alameda, Calaveras, Contra Costa, Fresno, Kern, Inyo, Mariposa, Merce ...

County Route S21 (California) There are 34 routes assigned to the "S" zone of the California Route Marker Program, which designates county routes in California. The "S" zone includes county highways in Imperial, Orange, Riverside, San Diego, and Santa Barbara counties. ...

Colorado State Highway 21 State Highway 21 (SH 21), also known as Powers Boulevard, is an expressway in El Paso County, in eastern Colorado Springs. SH 21 currently extends from SH 16 (Mesa Ridge Parkway) in Fountain at its southern end to Interquest Park ...

Connecticut Route 21 Route 21 is a state highway in rural northeastern Connecticut. It extends from Route 12 (Connecticut), Route 12 in Killingly, Connecticut, Killingly to Route 193 (Connecticut), Route 193 in Thompson, Connecticut, Thompson. It serv ...

Florida State Road 21 State Road 21 (SR 21) runs mostly in a southwest-to-northeast direction in the US state of Florida from McMeekin to Jacksonville. It is also known as Blanding Boulevard for much of its length. SR 21 is one of three routes, along with ...

County Road 21B (Clay County, Florida) State Road 21 (SR 21) runs mostly in a southwest-to-northeast direction in the US state of Florida from McMeekin to Jacksonville. It is also known as Blanding Boulevard for much of its length. SR 21 is one of three routes, along with ...

County Road 21B (Duval County, Florida) Duval County, Florida (located in north-east Florida) operates a system of county roads that serve all portions of the county. The numbers and routes of all Florida highways are assigned by the Florida Department of Transportation (FDOT), while ...

County Road 21D (Duval County, Florida) Duval County, Florida (located in north-east Florida) operates a system of county roads that serve all portions of the county. The numbers and routes of all Florida highways are assigned by the Florida Department of Transportation (FDOT), while ...

County Road 21 (Marion County, Florida) State Road 21 (SR 21) runs mostly in a southwest-to-northeast direction in the US state of Florida from McMeekin, Florida, McMeekin to Jacksonville, Florida, Jacksonville. It is also known as Blanding Boulevard for much of its length. SR&nb ...

County Road 21 (Putnam County, Florida) State Road 21 (SR 21) runs mostly in a southwest-to-northeast direction in the US state of Florida from McMeekin to Jacksonville. It is also known as Blanding Boulevard for much of its length. SR 21 is one of three routes, along with ...

Georgia State Route 21 State Route 21 (SR 21) is an state highway that travels southeast-to-northwest through portions of Chatham, Effingham, Screven, and Jenkins counties in the eastern part of the U.S. state of Georgia. The highway connects the Savanna ...

Hawaii Route 21 (former) * ID-21

Idaho State Highway 21 State Highway 21 (SH-21), also known as the Ponderosa Pine Scenic Byway, is a state highway in Idaho. It runs from Boise to Stanley, primarily as a two-lane road. With two-thirds of its length in Boise County, it passes by historic Idaho City a ...

Illinois Route 21 Illinois Route 21 (IL 21) is an arterial north–south state highway in northeastern Illinois. It runs from Illinois Route 43 (Harlem Avenue) in Niles to U.S. Route 41 (Skokie Highway) north of Gurnee. Illinois 21 is 28.13 miles (45.27 ...

Indiana State Road 21 Indiana () is a U.S. state in the Midwestern United States. It is the 38th-largest by area and the 17th-most populous of the 50 States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th st ...

(former) * Iowa 21

Iowa Highway 21 Iowa Highway 21 (Iowa 21) is a state highway that runs from north to south in central Iowa. It has a length of . Iowa 21 begins at Iowa 149 west of Hedrick and ends at a freeway interchange with U.S. Highway 20 (US 20) in W ...

Kentucky Route 21 Kentucky Route 21 (KY 21) is a west-east highway in Madison County, running from the Garrard County line near Paint Lick to Bighill, east of Berea. It begins at KY 52 at the Garrard County line at the Paint Lick Creek Bridge. The road passe ...

Louisiana Highway 21 Louisiana Highway 21 (LA 21) is a state highway in Louisiana that serves St. Tammany Parish, LA, St. Tammany and Washington Parish, LA, Washington Parishes. It spans and is signed north and south. Route description From the south, LA 21 begins a ...

Maryland Route 21 * MA Route 21

Massachusetts Route 21 Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...

M-21 (Michigan highway) M-21 is an east–west state trunkline highway in the US state of Michigan connecting the cities of Grand Rapids and Flint. The highway passes through rural farming country and several small towns along its course through the Lower Peninsula. ...

Minnesota State Highway 21 Minnesota State Highway 21 (MN 21) is a highway in Minnesota, which runs from its Intersection (road), intersection with Minnesota State Highway 60, State Highway 60 in Faribault, Minnesota, Faribault and continues north to its northern term ...

County Road 21 (Anoka County, Minnesota) The following is a list of county-maintained roads in Anoka County, Minnesota, United States. Many routes in this list are also county-state-aid-highways (CSAH.) CR 1–CR 25 County Road 1 runs from County Road 14 (East Main Street) in ...

County Road 21 (Hennepin County, Minnesota) Hennepin County, Minnesota, United States maintains a number of county roads, many of them county state aid highways (CSAH). This includes a number of streets through the city of Minneapolis. CR 1–CR 25 County Road 1 serves Bloomington and E ...

County Road 21 (Scott County, Minnesota) The following is a list of county-maintained roads in Scott County, Minnesota, United States. Many routes in this list are also county-state-aid-highways (CSAH.) Route list Refere ...

Mississippi Highway 21 Mississippi Highway 21 (MS 21) is a state highway in central Mississippi. It runs from north to south for and serves six counties: Scott, Leake, Newton, Neshoba, Kemper, and Noxubee. Route description MS 21 begins in Scott County in ...

Missouri Route 21 Route 21 is a highway in eastern Missouri. Its northern terminus is at Route 30 in Affton. Its southern terminus is at the Arkansas state line (where it continues as Highway 115). In the St. Louis area, it is known as Tesson Ferry Road, which w ...

Montana Highway 21 The state highways in Montana are the state highways owned and maintained by the Montana Department of Transportation (MDT) in the US state of Montana. Montana's state highways are classified as either primary or secondary. Several of Montana's ...

Nebraska Highway 21 Nebraska Highway 21 is a highway in central Nebraska. Its southern terminus is at Nebraska Highway 23 east of Eustis. Its northern terminus is at an intersection with Nebraska Highway 2 and Nebraska Highway 92 in Broken Bow. Route description ...

Nebraska Spur 21B ** N SPUR 21C

Nebraska Spur 21C * Nevada 21

Nevada State Route 21 (former) * Circle sign 21

New Jersey Route 21 Route 21 is a state highway in northern New Jersey, running from the Newark Airport Interchange with U.S. Route 1/9 (US 1-9) and US 22 in Newark, Essex County to an interchange with US 46 in Clifton, Passaic County. The route ...

County Route C21 (Bergen County, New Jersey) The following is a list of county routes in Bergen County in the U.S. state of New Jersey. For more information on the county route system in New Jersey as a whole, including its history, see County routes in New Jersey. 500-series county rout ...

County Route 21 (Monmouth County, New Jersey) * New Mexico 21

New Mexico State Road 21 New Mexico State Road 21 (NM 21), is a state highway located entirely in Colfax County in the U.S. state of New Mexico. The road starts in the center of the town of Cimarron at U.S. Route 64 (US 64) and runs southward then east to an intersect ...

New York State Route 21 New York State Route 21 (NY 21) is a state highway extending for about through the western part of New York in the United States. The southern terminus of the route is at an intersection with NY 417 in the village of Andover, ...

County Route 21 (Allegany County, New York) County routes in Allegany County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. The signing of county routes in Allegany County began in 1957, as part of a sponsored project ...

County Route 21 (Chautauqua County, New York) County routes in Chautauqua County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. Even numbered routes are west–east roads, while odd numbered routes are south–north roa ...

County Route 21 (Columbia County, New York) Twenty-one, XXI or 21 may refer to: *21 (number), the natural number following 20 and preceding 22 * The years 21 BC, AD 21, 1921, 2021 Films * ''21'' (2008 film), starring Kevin Spacey, Laurence Fishburne, Jim Sturgess, and Kate Bosworth * ''T ...

***

County Route 21B (Columbia County, New York) County routes in Columbia County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. All roads maintained by Columbia County are assigned a county highway number; this number is un ...

***

County Route 21C (Columbia County, New York) 21c or 21C may refer to: * ''21c'' (TV series), a Canadian newsmagazine *21c Museum Hotel, an American hotel chain * Carbon-21 (21C), an isotope of carbon * Czinger 21C, an American hybrid supercar See also *21st century *MIKE 21C *''Techno Police ...

County Route 21 (Delaware County, New York) County routes in Delaware County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. Traditionally, county routes are signed at each end of the road which the county maintains. Th ...

County Route 21 (Dutchess County, New York) Dutchess County, New York maintains a system of signed county routes primarily to serve local traffic between the various communities in the county. Route numbers below 100 generally increase progressively based on the alphabetical order of the to ...

County Route 21 (Erie County, New York) Most of the county routes in Erie County, New York, act as primary roads in the less developed areas and also serve to interconnect the various villages and hamlets of the county. Not all routes are signed. All routes are maintained by the Erie ...

County Route 21 (Essex County, New York) The highway system of Essex County, New York, comprises of roads maintained by the New York State Department of Transportation, the county, and its towns and villages. Eighteen state-maintained highways enter the county, which account for a combi ...

County Route 21 (Genesee County, New York) County routes in Genesee County, New York, are not posted on route markers. However, the number is given, along with house numbers, often on intersection blade signs. There is no apparent numbering pattern. County routes generally comprise one or ...

County Route 21 (Hamilton County, New York) The highway system of Hamilton County, New York, comprises of roads maintained by the New York State Department of Transportation (NYSDOT), the county, and its towns and villages. NYSDOT maintains five state touring routes in Hamilton County, w ...

County Route 21 (Herkimer County, New York) County routes in Herkimer County, New York, are typically signed only on street blade signs. Some routes are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker; however, this is uncommon. Rou ...

County Route 21 (Lewis County, New York) County routes in Lewis County, New York, are signed with the Manual on Uniform Traffic Control Devices The ''Manual on Uniform Traffic Control Devices for Streets and Highways'' (usually referred to as the ''Manual on Uniform Traffic Control D ...

County Route 21 (Oneida County, New York) County routes in Oneida County, New York, are generally signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. County Route 840 (CR 840) was once the only signed county route within Oneid ...

County Route 21 (Ontario County, New York) County routes in Ontario County, New York, provide main arterial connections that are not otherwise provided by state highways. County routes never enter villages or cities; instead, they usually terminate at the village or city line or at an int ...

County Route 21 (Orange County, New York) County routes in Orange County, New York, are maintained by the Orange County Department of Public Works. Most routes are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker; however, some route ...

County Route 21 (Oswego County, New York) County routes in Oswego County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. Routes typically have one or more road names in addition to their designation; however, several a ...

County Route 21 (Otsego County, New York) ** Putnam County Route 21 NY

County Route 21 (Putnam County, New York) County routes in Putnam County, New York, known within the county as "county roads", are owned and maintained by the Putnam County Department of Highways and Facilities. Most of the county road numbers, which are all two-digits, are signed with t ...

County Route 21 (Rensselaer County, New York) County routes in Rensselaer County, New York, are maintained by the Rensselaer County Highway Department and signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. Routes generally do not enter ci ...

County Route 21 (Saratoga County, New York) County routes in Saratoga County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. The highest numbered route in the county, County Route 1345 (CR 1345), is the only si ...

County Route 21 (Schoharie County, New York) ** Suffolk County Route 21 NY

County Route 21 (Suffolk County, New York) A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

County Route 21 (Sullivan County, New York) County routes in Sullivan County, New York, are maintained by the Sullivan County Division of Public Works and signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. The county highway system comp ...

County Route 21 (Ulster County, New York) County routes in Ulster County, New York, are mostly signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker, however, several routes are still marked with very faded, sometimes illegible blue diamon ...

County Route 21 (Washington County, New York) County routes in Washington County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. Routes 1–40 Routes 41 and up See also *County routes in New York *List of former stat ...

County Route 21 (Westchester County, New York) County routes in Westchester County, New York, are maintained by the Westchester County highway department. They provide additional interconnections between state highways within the county. Some portions of state highways in Lower Westchester Coun ...

County Route 21 (Wyoming County, New York) County routes in Wyoming County, New York, serve as connections between major routes in the county. Wyoming County does not use the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagonal route marker to sign its county routes; ...

County Route 21 (Yates County, New York) County routes in Yates County, New York, are signed with the Manual on Uniform Traffic Control Devices-standard yellow-on-blue pentagon route marker. Route numbers are also posted at junctions on street blade signs that display the standard route ...

North Carolina Highway 21 (former) * ND-21 (2015)

North Dakota Highway 21 * OH-21

Ohio State Route 21 State Route 21 (SR 21) is a north–south state highway in northeastern Ohio. The southern terminus is north of Strasburg on U.S. Route 250. The northern terminus is at an interchange with Interstate 77 in Cuyahoga Heights. Route desc ...

Pennsylvania Route 21 Pennsylvania Route 21 (PA 21) is a long east–west state highway in the US state of Pennsylvania. The western terminus of the route is at the West Virginia state line in Richhill Township, where PA 21 continues into West Virginia as West ...

South Carolina Highway 21 (1920s) U.S. Route 25 (US 25) is a U.S. Highway that travels from Brunswick, Georgia to the Kentucky–Ohio state line, where Covington, Kentucky meets Cincinnati, Ohio at the Ohio River. In the U.S. state of South Carolina, it travels south ...

(former) * SD 21

South Dakota Highway 21 * Tennessee 21

Tennessee State Route 21 State Route 21 (SR 21) is a two lane highway that runs from the Mississippi River west of Tiptonville, Tennessee to the Kentucky state line north of Union City. This road provides access to Reelfoot Lake State Park. Route description SR 21 beg ...

Texas State Highway 21 State Highway 21 (SH 21) runs from the Texas-Louisiana boundary east of San Augustine to San Marcos in east and central Texas. SH 21 mostly follows the alignment of the Old San Antonio Road and the El Camino Real, except for the portion bet ...

Texas State Highway Loop 21 ** Texas FM 21

Farm to Market Road 21 **

Texas Park Road 21 Park Roads represent a subset of public roads designated and maintained by the Texas Department of Transportation (TxDOT). Park Roads are intended to provide access to and connection within Texas state parks. The system of Park Roads was establis ...

Utah State Route 21 State Route 21 (SR-21) is a state highway in western Utah, running for in Millard and Beaver Counties from the Nevada state line near Garrison to Beaver. Route description SR-21 begins at the Nevada state line as a continuation of Nevada St ...

State Route 21 (Virginia 1918-1933) U.S. Route 211 (US 211) is a spur of US 11 in the U.S. state of Virginia. Known for most of its length as Lee Highway, the U.S. Highway runs from Interstate 81 (I-81) and Virginia State Route 211 (SR 211) in New Market east to US 15 Business, ...

(former) * WA-21

Washington State Route 21 ** WA-PSH21

Primary State Highway 21 (Washington) Primary State Highways were major state highways in the U.S. state of Washington used in the early 20th century. They were created as the first organized road numbering system in the state in stages between 1905 and 1937 and used until the 1964 ...

(former) ** WA-SSH21-B

Secondary State Highway 21B (Washington) 21B may refer to: * 2-1B, a droid character in ''Star Wars'' * Boron-21 Boron (5B) naturally occurs as isotopes and , the latter of which makes up about 80% of natural boron. There are 13 radioisotopes that have been discovered, with mass num ...

(former) ** WA-SSH21-C

Secondary State Highway 21C (Washington) 21c or 21C may refer to: * ''21c'' (TV series), a Canadian newsmagazine *21c Museum Hotel, an American hotel chain * Carbon-21 (21C), an isotope of carbon * Czinger 21C, an American hybrid supercar See also *21st century *MIKE 21C MIKE 21C is a ...

(former) * CR 21 jct

County Route 21 (Jackson County, West Virginia) U.S. Route 21 or U.S. Highway 21 (US 21) is a major north–south United States Numbered Highway in the Southeastern United States that travels . The southern terminus is in Hunting Island State Park, South Carolina, south of the ...

County Route 21 (Kanawha County, West Virginia) U.S. Route 21 or U.S. Highway 21 (US 21) is a major north–south United States Numbered Highway in the Southeastern United States that travels . The southern terminus is in Hunting Island State Park, South Carolina, south of the ...

County Route 21 (Wirt County, West Virginia) U.S. Route 21 or U.S. Highway 21 (US 21) is a major north–south United States Numbered Highway in the Southeastern United States that travels . The southern terminus is in Hunting Island State Park, South Carolina, south of the ...

County Route 21 (Wood County, West Virginia) U.S. Route 21 or U.S. Highway 21 (US 21) is a major north–south United States Numbered Highway in the Southeastern United States that travels . The southern terminus is in Hunting Island State Park, South Carolina, south of the ...

Wisconsin Highway 21 ;Territories * PR urban primary 21

Puerto Rico Highway 21