List of highways numbered 3

International

• Asian Highway 3
• European route E03
• European route E003
• Tripoli – Cape Town Highway

  Albania

• A3 motorway
• SH-3 Road in Albania from Kapshtice to Tirana.

  Argentina

• National Route 3

  Australia

New South Wales

• A3

  Northern Territory

• Queensland

• M3/A3
• Burnett Highway
• State Route 3 – Isis Highway

  South Australia

• Cross Road

  Tasmania

• Tasman Highway

  Victoria

• *Eastern Freeway
• *EastLink
• *Frankston Freeway
• *Nepean Highway

  Western Australia

• State Route 3 – Reid Highway and Roe Highway

  Austria

• Südost Autobahn

  Belgium

• R3

  Bolivia

• National Route 3

  Bulgaria

• Републикански път I-3
• Struma motorway ''''''

  Burma

• National Highway 3

  Cambodia

• National Highway 3

  Canada

• Alberta Highway 3
• British Columbia Highway 3
• Manitoba Highway 3
• New Brunswick Route 3
• Newfoundland and Labrador Route 3
• Nova Scotia Trunk 3
• Ontario Highway 3
• Prince Edward Island Route 3
• Quebec Route 3
• Saskatchewan Highway 3
• Yellowknife Highway
• Yukon Highway 3

  China

• G3 Expressway

  Costa Rica

• National Route 3

  Cuba

• Autopista A3
• Highway I–3
• * Highway 1–I–3
• * Highway 2–I–3
• * Highway 3–I–3
• * Highway 4–I–3

  Czech Republic

• D3 motorway
• I/3 Highway

  Djibouti

• RN-3

  Dominican Republic

• DR-3

  Eswatini

• MR3 road

  Finland

• Finnish national road 3
• Åland Islands Highway 3

  Germany

• Bundesautobahn 3
• Bundesstraße 3

  Greece

• A3 motorway
• EO3 road

  Hong Kong

• Route 3

  Hungary

• M3 motorway
• Main road 3

  India

• National Highway 3
• National Highway 3

  Indonesia

• Indonesian National Route 3

  Iran

• Freeway 3

  Iraq

• Highway 3

  Ireland

• M3 motorway
• N3 road

  Israel

• Highway 3

  Italy

• Autostrada A3
• RA 3

  Japan

• *
• Route 3 in the Shibuya area of Tokyo
• Route 3
• Kobe Route

  Kazakhstan

• A3 highway

  Korea, South

• National Route 35

  Laos

• R3A highway

  Malaysia

• Malaysia Federal Route 3

  Mexico

• Mexican Federal Highway 3

  Moldova

• Magistrala 3
• Road 3

  New Zealand

• New Zealand State Highway 3
• * New Zealand State Highway 3A

  Nigeria

• A3 highway

  Oman

• Route 3

  Paraguay

• Image:R3-PY.svg|20px| National Route 3

  Philippines

• Circumferential Road 3
• Radial Road 3
• N3 highway
• E3 expressway

  Poland

• Autostrada A3
• Expressway S3
• National road 3

  Romania

• Drumul Naţional 3
• Autostrada A3

  Russia

• M3 highway

  Sri Lanka

• A3 highway | Colombo-Puttalam Road
• Colombo–Katunayake Expressway

  South Africa

• N3
• M3
• M3

  Taiwan (Republic of China)

• Freeway 3
• Provincial Highway 3

  Thailand

• Thailand Route 3

  Turkey

• , a motorway in Turkey running from Edirne to Istanbul.

  United Kingdom

• M3 motorway
• A3 road
• M3 motorway
• A3 road

  United States

• Interstate 3
• Interstate A-3
• Interstate H-3
• Interstate PR-3
• U.S. Route 3
• New England Interstate Route 3
• Alabama State Route 3
• * County Route 3
• Alaska Route 3
• Arkansas Highway 3
• California State Route 3
• Colorado State Highway 3
• Connecticut Route 3
• Delaware Route 3
• Florida State Road 3
• * Florida State Road 3A
• * County Road 3
• * County Road 3
• Georgia State Route 3
• * Georgia State Route 3N
• * Georgia State Route 3S
• * Georgia State Route 3W
• * Georgia State Route 3W
• * Georgia State Route 3W
• * Georgia State Route 3W
• * Georgia State Route 3W
• * Georgia State Route 3E
• * Georgia State Route 3E
• Idaho State Highway 3
• Illinois Route 3
• Indiana State Road 3
• Iowa Highway 3
• K-3
• Kentucky Route 3
• Louisiana Highway 3
• * Louisiana State Route 3
• Maine State Route 3
• Maryland Route 3
• Massachusetts Route 3
• M-3
• Minnesota State Highway 3
• * County Road 3
• * County Road 3
• * County Road 3
• * County Road 3
• * County Road 3
• * County Road 3
• Mississippi Highway 3
• Missouri Route 3
• * Missouri Route 3
• Montana Highway 3
• Nebraska Highway 3
• Nevada State Route 3
• New Jersey Route 3
• * County Route 3
• ** County Route 3A
• * County Route 3
• New York State Route 3
• * New York State Route 3A
• * New York State Route 3A
• * New York State Route 3B
• * New York State Route 3B
• * New York State Route 3C
• * New York State Route 3C
• * New York State Route 3D
• * New York State Route 3D
• * New York State Route 3E
• * New York State Route 3E
• * New York State Route 3F
• * New York State Route 3F
• * New York State Route 3G
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• * County Route 3
• North Carolina Highway 3
• North Dakota Highway 3
• Ohio State Route 3
• Oklahoma State Highway 3
• * Oklahoma State Highway 3E
• * Oklahoma State Highway 3W
• Oregon Route 3
• Pennsylvania Route 3
• Rhode Island Route 3
• South Carolina Highway 3
• Tennessee State Route 3
• Texas State Highway 3
• * Texas State Highway Loop 3
• * Texas State Highway Spur 3
• * Texas Farm to Market Road 3
• * Texas Park Road 3
• Utah State Route 3
• Vermont Route 3
• Virginia State Route 3
• Washington State Route 3
• * Primary State Highway 3
• West Virginia Route 3

  Territories

• Guam Highway 3
• Interstate PR-3
• Puerto Rico Highway 3
• * Puerto Rico Highway 3R

  Uruguay

• Route 3 Gral. José Artigas

  Zambia

• T3 road
• M3 road