Route 4, or Highway 4, may refer to several highways in the following countries:
International Asian Highway 4 European route E04 European route E004 Cairo – Cape Town Highway
Albania SH-4 road in Albania from Durrës to Kakavijë passing through Lushnjë, Fier, Ballsh, Tepelenë and Gjirokastër.
Australia New South Wales M4 Western Motorway (Sydney) Western Distributor (Sydney)
Northern Territory Lasseter Highway, NT
Tjukaruru Road Great Central Road
Queensland Port of Brisbane Motorway Capricorn Highway Scenic Highway, Queensland
Tasmania Esk Highway, Tasmania
Victoria West Gate Tunnel Motorway (Melbourne)
Western Australia State Route 4 (Western Australia) – Tonkin Highway
Austria Ost Autobahn
Belgium R4 road (Belgium) Bolivia National Route 4 (Bolivia)
Bulgaria A4 motorway (Bulgaria) I-4 road (Bulgaria)
Myanmar(Burma) National Highway 4 (Burma)
Cambodia National Highway 4 (Cambodia)
Canada Alberta Highway 4 British Columbia Highway 4 Manitoba Highway 4 New Brunswick Route 4 Northwest Territories Highway 4 (Ingraham Trail) Nova Scotia Trunk 4 Ontario Highway 4 Route 4 (Prince Edward Island) Quebec Route 4 (former) Saskatchewan Highway 4 Yukon Highway 4
China G4 Expressway G4w Expressway (G4's branch)
Costa Rica National Route 4
Cuba Autopista A4 Autopista A4–1 Highway 6–4
Czech Republic D4 Motorway I/4 Highway (in Czech)
Djibouti RN-4 (Djibouti)
Dominican Republic DR-4
Finland Finnish national road 4 Åland Islands Highway 4
Germany Bundesautobahn 4
Greece EO4 road
Hong Kong Route 4 (Hong Kong)
Hungary M4 motorway (Hungary) Main road 4 (Hungary)
India National Highway 4 (India) National Highway 4 (India, old numbering)
Indonesia Indonesian National Route 4
Iraq Highway 4 (Iraq)
Ireland M4 motorway (Republic of Ireland) N4 road (Ireland)
Israel Highway 4 (Israel)
Italy Autostrada A4 RA 4 State road 4 T4
Japan
(branch of the Tōhoku Expressway) (branch of the Tōhoku Expressway) (branch of the Tōhoku Expressway) (branch of the Tōhoku Expressway) (branch of the Tōhoku Expressway) (branch of the Tōhoku Expressway) Route 4 (Shuto Expressway) Route 4 (Nagoya Expressway) Bayshore Route (Port of Osaka-Kansai International Airport)
Korea, South National Route 4
Malaysia Malaysia Federal Route 4 Jalan Kerian Jalan Haji Sirat Johor State Route J4
Moldova M4 highway (Moldova)
Netherlands Rijksweg 4
New Zealand New Zealand State Highway 4
Nicaragua Nicaraguan Highway 4
Nigeria Nigeria Trunk Road A4
Norway Norwegian National Road 4
Paraguay National Route 4
Philippines Circumferential Road 4 Radial Road 4 N4 highway (Philippines) E4 expressway (Philippines)
Poland Motorway A4 National road 4 (according to the official documents, national road 4 and motorway A4 are basically the same route)
Romania Drumul Naţional 4 A4 motorway (Romania)
Russia M4 highway (Russia)
South Africa M4 (Port Elizabeth) M4 road (Pretoria) M4 (Durban) N4 (South Africa)
Taiwan National Highway 4 (Taiwan) Provincial Highway 4 (Taiwan)
Thailand Thailand Route 4 (Phetkasem Road)
Turkey , a motorway in Turkey running from Istanbul to Ankara.
United Kingdom M4 motorway (Great Britain) A4 road (Great Britain) A4 road (Northern Ireland)
United States Interstate 4 Interstate A-4 (Alaska; unsigned) Interstate H-4 (former proposal) U.S. Route 4 New England Interstate Route 4 (former) Alabama State Route 4 (former) County Route 4 (Lee County, Alabama) Alaska Route 4 Arkansas Highway 4 California State Route 4 County Route D4 (California) County Route E4 (California) County Route G4 (California) County Route J4 (California) County Route N4 (California) County Route S4 (California) Connecticut Route 4 Delaware Route 4 Florida State Road 4 County Road 4 (Escambia County, Florida) County Road 4 (Okaloosa County, Florida) County Road 4B (Okaloosa County, Florida) Georgia State Route 4 Georgia State Route 4 (former) Idaho State Highway 4 Illinois Route 4 Indiana State Road 4 Iowa Highway 4 K-4 (Kansas highway) Kentucky Route 4 Louisiana Highway 4 Maine State Route 4 Maryland Route 4 Massachusetts Route 4 M-4 (Michigan highway) (former) Minnesota State Highway 4 County Road 4 (Dakota County, Minnesota) County Road 4 (Goodhue County, Minnesota) County Road 4 (St. Louis County, Minnesota) Mississippi Highway 4 Missouri Route 4 (former) Nebraska Highway 4 Nevada State Route 4 (former) New Hampshire Route 4 New Jersey Route 4 New Jersey Route 4N (former) County Route 4 (Monmouth County, New Jersey) New Mexico State Road 4 New York State Route 4 (1924–1927) (former) County Route 4 (Broome County, New York) County Route 4 (Cattaraugus County, New York) County Route 4 (Chautauqua County, New York) County Route 4 (Chemung County, New York) County Route 4 (Chenango County, New York) County Route 4 (Clinton County, New York) County Route 4 (Columbia County, New York) County Route 4 (Dutchess County, New York) County Route 4 (Erie County, New York) County Route 4 (Franklin County, New York) County Route 4 (Genesee County, New York) County Route 4 (Jefferson County, New York) County Route 4 (Nassau County, New York) County Route 4 (Oswego County, New York) County Route 4 (Otsego County, New York) County Route 4 (Rensselaer County, New York) County Route 4 (Rockland County, New York) County Route 4 (Saratoga County, New York) County Route 4 (Steuben County, New York) County Route 4 (Suffolk County, New York) County Route 4 (Tioga County, New York) County Route 4 (Ulster County, New York) County Route 4 (Warren County, New York) County Route 4 (Wyoming County, New York) North Carolina Highway 4 Charlotte Route 4 North Dakota Highway 4 Ohio State Route 4 Oklahoma State Highway 4 Pennsylvania Route 4 (former) Rhode Island Route 4 South Carolina Highway 4 Tennessee State Route 4 Texas State Highway 4 Texas State Highway Loop 4 (former) Texas Farm to Market Road 4 Texas Park Road 4 Texas Recreational Road 4 Either of two prior designations for highways in Utah Utah State Route 4 (1962-1977), the former designation for Interstate 70 in Utah Utah State Route 4 (1910-1962), the state designation for several sections of multiple U.S. Highways in the northern part of the state Vermont Route 4A Virginia State Route 4 Washington State Route 4 Primary State Highway 4 (Washington) (former) West Virginia Route 4
Territories Guam Highway 4 Puerto Rico Highway 4 (former)
Uruguay Route 4 Andrés Artigas
Vietnam Hanoi–Haiphong Expressway National Route 4 (Vietnam)
Zambia Great East Road M4 road (Zambia)
See also List of highways numbered 4A