List of highways numbered 12

International

• Asian Highway 12
• European route E12
• European route E012

  Argentina

• National Route 12

  Australia

• Western Sydney Airport Motorway
• 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
• Saskatchewan Highway 12

  China

• G12 Expressway

  Czech Republic

• I/12 Highway; Czech: :cz:Silnice I/12|Silnice I/12

  India

• National Highway 12

  Iran

• Road 12

  Iraq

• Highway 12

  Ireland

• N12 road

  Israel

• Highway 12

  Japan

• Japan National Route 12

  Korea, South

• Expressway 12
• * Muan–Gwangju Expressway
• * Gwangju–Daegu Expressway

  Malaysia

• Tun Razak Highway

  New Zealand

• New Zealand State Highway 12

  Paraguay

• National Route 12

  Romania

• DN12 - Drumul Național 12
• A12 - Pitești–Craiova Expressway

  South Africa

• N12 road

  Taiwan

• Provincial Highway 12

  United Kingdom

• British A12
• Northern Irish M12

  United States

• Interstate 12
• U.S. Route 12
• New England Interstate Route 12
• Alabama State Route 12
• Arkansas Highway 12
• California State Route 12
• * County Route A12
• * County Route E12
• * County Route G12
• * County Route J12
• * County Route S12
• Colorado State Highway 12
• Connecticut Route 12
• Delaware Route 12
• Florida State Road 12
• * County Road 12
• * County Road 12
• Georgia State Route 12
• Illinois Route 12
• Iowa Highway 12
• * County Route C12
• K-12
• Kentucky Route 12
• Louisiana Highway 12
• * Louisiana State Route 12
• Maryland Route 12
• Massachusetts Route 12
• M-12
• Mississippi Highway 12
• Missouri Route 12
• Nebraska Highway 12
• Nevada State Route 12
• New Hampshire Route 12
• New Jersey Route 12
• * County Route 12
• New Mexico State Road 12
• New York State Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• * County Route 12
• North Carolina Highway 12
• Ohio State Route 12
• Pennsylvania Route 12
• Rhode Island Route 12
• South Carolina Highway 12
• South Dakota Highway 12
• 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
• * State Route 12
• * State Route 12
• State Road 12
• * Washington State Route 12
• * Primary State Highway 12
• * Secondary State Highway 12G
• * Secondary State Highway 12H
• West Virginia Route 12
• Wisconsin Highway 12
• Wyoming Highway 12

• Guam Highway 12
• Puerto Rico Highway 12