List of highways numbered 31

International

• Asian Highway 31
• European route E31

  Australia

• Hume Highway

  Austria

• Burgenland Schnellstraße
• Ybbstal Straße

  Burma

• National Highway 31

  Canada

• Alberta Highway 31
• British Columbia Highway 31
• Manitoba Highway 31
• Ontario Highway 31
• Quebec Autoroute 31
• Saskatchewan Highway 31

  Czech Republic

• part of I/31 Highway; Czech: :cz:Silnice I/31|Silnice I/31

  France

• A31 autoroute

  Germany

• Bundesautobahn 31
• Bundesstraße 31

  Iceland

• Route 31

  India

• Iran

• Road 31

  Israel

• Highway 31

  Italy

• Autostrada A31

  Japan

• Japan National Route 31
• Hiroshima-Kure Road

  Korea, South

• National Route 31

  Netherlands

• A31 motorway

  New Zealand

• New Zealand State Highway 31

  South Africa

• M31 road

  Sri Lanka

• A31 highway

  Thailand

• Thailand Route 31

  Turkey

• , a motorway in Turkey running from İzmir to Aydın.

  United Kingdom

• British A31
• A31 road

  United States

• Interstate 31
• U.S. Route 31
• * U.S. Route 31W
• * U.S. Route 31E
• Arkansas Highway 31
• California State Route 31
• * County Route J31
• * County Route S31
• Connecticut Route 31
• Florida State Road 31
• Georgia State Route 31
• Hawaii Route 31
• Idaho State Highway 31
• Illinois Route 31
• Iowa Highway 31
• K-31
• Louisiana Highway 31
• Maryland Route 31
• Massachusetts Route 31
• M-31
• Minnesota State Highway 31
• * County Road 31
• * County Road 31
• * County Road 31
• * County Road 31
• Missouri Route 31
• Nebraska Highway 31
• Nevada State Route 31
• New Hampshire Route 31
• New Jersey Route 31
• * County Route 31
• ** County Route S31
• * County Route 31
• * County Route 31
• New Mexico State Road 31
• New York State Route 31
• * New York State Route 31F
• * County Route 31
• * County Route 31
• * County Route 31
• * County Route 31
• * County Route 31
• * County Route 31
• * County Route 31
• * County Route 31
• * County Route 31
• * County Route 31
• * County Route 31
• North Carolina Highway 31
• North Dakota Highway 31
• Ohio State Route 31
• Oklahoma State Highway 31
• Oregon Route 31
• Pennsylvania Route 31
• South Carolina Highway 31
• Tennessee State Route 31
• Texas State Highway 31
• * Texas State Highway Spur 31
• * Farm to Market Road 31
• * Texas Park Road 31
• Utah State Route 31
• Vermont Route 31
• Virginia State Route 31
• * Virginia State Route 31
• Washington State Route 31
• West Virginia Route 31
• Wisconsin Highway 31
• Wyoming Highway 31

• Puerto Rico Highway 31