For roads named A21 see ; List of A21 roads
Route 21, or Highway 21, can refer to:
International
Australia
Austria
Cambodia
Canada
Alberta Highway 21
British Columbia Highway 21
Manitoba Highway 21
Newfoundland and Labrador Route 21
Ontario Highway 21
Prince Edward Island Route 21
Saskatchewan Highway 21
Costa Rica
Czech Republic
I/21 Highway; Czech: Silnice I/21
Hungary
India
Iran
Ireland
Italy
Japan
Korea, South
Moldova
New Zealand
Paraguay
Turkey
O-21, a motorway in Turkey running from Kemerhisar, Niğde Province to Tarsus, Mersin Province.
United Kingdom
United States
U.S. Route 21
Alabama State Route 21
Arkansas Highway 21
Arkansas Highway 21E (former)
Arkansas Highway 21W (former)
California State Route 21 (former)
Colorado State Highway 21
Connecticut Route 21
Florida State Road 21
Georgia State Route 21
Hawaii Route 21 (former)
Idaho State Highway 21
Illinois Route 21
Indiana State Road 21 (former)
Iowa Highway 21
Kentucky Route 21
Louisiana Highway 21
Maryland Route 21
Massachusetts Route 21
M-21 (Michigan highway)
Minnesota State Highway 21
Mississippi Highway 21
Missouri Route 21
Montana Highway 21
Nebraska Highway 21
Nevada State Route 21 (former)
New Jersey Route 21
New Mexico State Road 21
New York State Route 21
County Route 21 (Allegany County, New York)
County Route 21 (Chautauqua County, New York)
County Route 21 (Columbia County, New York)
County Route 21 (Delaware County, New York)
County Route 21 (Dutchess County, New York)
County Route 21 (Erie County, New York)
County Route 21 (Essex County, New York)
County Route 21 (Genesee County, New York)
County Route 21 (Hamilton County, New York)
County Route 21 (Herkimer County, New York)
County Route 21 (Lewis County, New York)
County Route 21 (Oneida County, New York)
County Route 21 (Ontario County, New York)
County Route 21 (Orange County, New York)
County Route 21 (Oswego County, New York)
County Route 21 (Otsego County, New York)
County Route 21 (Putnam County, New York)
County Route 21 (Rensselaer County, New York)
County Route 21 (Saratoga County, New York)
County Route 21 (Schoharie County, New York)
County Route 21 (Suffolk County, New York)
County Route 21 (Sullivan County, New York)
County Route 21 (Ulster County, New York)
County Route 21 (Washington County, New York)
County Route 21 (Westchester County, New York)
County Route 21 (Wyoming County, New York)
County Route 21 (Yates County, New York)
North Carolina Highway 21 (former)
North Dakota Highway 21
Ohio State Route 21
Pennsylvania Route 21
South Carolina Highway 21 (1920s) (former)
South Dakota Highway 21
Tennessee State Route 21
Texas State Highway 21
Utah State Route 21
State Route 21 (Virginia 1918-1933) (former)
Washington State Route 21
County Route 21 (Jackson County, West Virginia)
Wisconsin Highway 21
- Territories
See also
Preceded by 20 |
Lists of highways 21 |
Succeeded by 22 |