List of highways numbered 21
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
Cuba
- Highway 6–21
Czech Republic
- I/21 Highway; Czech: Silnice I/21
Greece
Hungary
India
Iran
Ireland
Italy
Japan
Korea, South
Moldova
New Zealand
Paraguay
- National Route 21
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 |