Route 12 or Highway 12 can refer to:
For a list of roads named A12, see A12 roads.
International Asian Highway 12 European route E12 European route E012
Argentina National Route 12
Australia NSW M12 Motorway
NT Plenty Highway
VIC/SA Mallee Highway South Gippsland Highway
Austria Inntal Autobahn
Bulgaria Републикански път I-12
Canada Alberta Highway 12 British Columbia Highway 12 Manitoba Highway 12 Nova Scotia Trunk 12 Ontario Highway 12 Prince Edward Island Route 12 Quebec Route 12 (former) Saskatchewan Highway 12
China G12 Expressway
Cuba Highway 2–12 Highway 4–12
Czech Republic I/12 Highway; Czech: Silnice I/12
Dominican Republic DR-12
Greece EO12 road
India National Highway 12 (India)
Iran
Iraq Highway 12 (Iraq)
Ireland N12 road (Ireland)
Israel Highway 12 (Israel)
Italy Autostrada A12 RA 12 State road 12
Japan Japan National Route 12
Korea, South Expressway 12 Muan–Gwangju Expressway Gwangju–Daegu Expressway
Malaysia
Tun Razak Highway Jalan Changkat Keruing
New Zealand New Zealand State Highway 12
Nigeria A12 highway (Nigeria)
Pakistan
M-12 motorway Sambrial-Kharian
Paraguay National Route 12
Poland Motorway A12 (former; 1986–2000/2001) Expressway S12 National road 12
Romania DN12 - Drumul Național 12 A12 - Pitești–Craiova Expressway
South Africa N12 road (South Africa)
Taiwan Provincial Highway 12 (Taiwan)
United Kingdom British A12 (London-Great Yarmouth) Northern Irish M12 (Craigavon) A12 road (Northern Ireland)
United States Interstate 12 U.S. Route 12 New England Interstate Route 12 (former) Alabama State Route 12 (former) Arkansas Highway 12 California State Route 12 County Route A12 (California) County Route E12 (California) County Route G12 (California) County Route J12 (California) County Route S12 (California) Colorado State Highway 12 Connecticut Route 12 Delaware Route 12 Florida State Road 12 County Road 12 (Gadsden County, Florida) County Road 12 (Leon County, Florida) County Road 12 (Liberty County, Florida) Georgia State Route 12 Illinois Route 12 (former) Iowa Highway 12 County Route C12 (Humboldt County, Iowa) K-12 (Kansas highway) (former) Kentucky Route 12 Louisiana Highway 12 Louisiana State Route 12 (former) Maryland Route 12 Massachusetts Route 12 M-12 (Michigan highway) (former) County Road 12 (Cook County, Minnesota) County Road 12 (Goodhue County, Minnesota) County Road 12 (Hennepin County, Minnesota) County Road 12 (Washington County, Minnesota) Mississippi Highway 12 Missouri Route 12 Nebraska Highway 12 Nevada State Route 12 (former) New Hampshire Route 12 New Jersey Route 12 County Route 12 (Monmouth County, New Jersey) New Mexico State Road 12 New York State Route 12 County Route 12 (Allegany County, New York) County Route 12 (Cattaraugus County, New York) County Route 12 (Chemung County, New York) County Route 12 (Chenango County, New York) County Route 12 (Clinton County, New York) County Route 12 (Genesee County, New York) County Route 12 (Greene County, New York) County Route 12 (Jefferson County, New York) County Route 12 (Nassau County, New York) County Route 12 (Niagara County, New York) County Route 12 (Onondaga County, New York) County Route 12 (Otsego County, New York) County Route 12 (Putnam County, New York) County Route 12 (Schuyler County, New York) County Route 12 (St. Lawrence County, New York) County Route 12 (Steuben County, New York) County Route 12 (Suffolk County, New York) County Route 12 (Ulster County, New York) County Route 12 (Warren County, New York) North Carolina Highway 12 Ohio State Route 12 Pennsylvania Route 12 Rhode Island Route 12 South Carolina Highway 12 South Dakota Highway 12 (former) Tennessee State Route 12 Texas State Highway 12 Texas State Highway Loop 12 Ranch to Market Road 12 Texas Park Road 12 Utah State Route 12 Vermont Route 12 State Route 12 (Virginia 1918-1933) (former) State Route 12 (Virginia 1933-1935) (former) State Route 12 (Virginia 1935-1953) (former) State Road 12 (Washington 1905–1919) (former) Washington State Route 12 (1964-1967) (former) Primary State Highway 12 (Washington) (former) Secondary State Highway 12G (Washington) (former) Secondary State Highway 12H (Washington) (former) West Virginia Route 12 Wisconsin Highway 12 (former) Wyoming Highway 12
Territories Guam Highway 12 Puerto Rico Highway 12
Uruguay Route 12 Dr. Luis Alberto de Herrera
Zambia M12 road (Zambia)
See also List of A12 roads List of highways numbered 12A List of highways numbered 12B List of highways numbered 12C List of highways numbered 12D List of highways numbered 12E List of highways numbered 12F