List of highways numbered 20

International

• European route E20

  Australia

• Sturt Highway
• Yarra Bank Highway

  Canada

• Alberta Highway 20
• British Columbia Highway 20
• Manitoba Highway 20
• New Brunswick Route 20
• Newfoundland and Labrador Route 20
• Ontario Highway 20
• Prince Edward Island Route 20
• Quebec Autoroute 20
• Saskatchewan Highway 20

  China

• G20 Expressway

  Czech Republic

• I/20 Highway; Czech: :cz:Silnice I/20|Silnice I/20

  Ecuador

• Ecuador Highway 20

  India

• National Highway 20

  Israel

• Ayalon Highway

  Japan

• Japan National Route 20
• Chūō Expressway

  Korea, South

• Iksan–Pohang Expressway
• National Route 20
• Gukjido 20

  New Zealand

• New Zealand State Highway 20

  Turkey

• , a motorway in Turkey as the ring road in Ankara.

  United Kingdom

• British A20
• British M20

  United States

• Interstate 20
• U.S. Route 20
• * U.S. Route 20N
• * U.S. Route 20S
• New England Route 20
• Alabama State Route 20
• Arkansas Highway 20
• California State Route 20
• * County Route A20
• * County Route E20
• * County Route G20
• * County Route J20
• *County Route S20
• Connecticut Route 20
• Delaware Route 20
• Florida State Road 20
• Georgia State Route 20
• * Georgia State Route 20
• * Georgia State Route 20
• Illinois Route 20
• K-20
• Kentucky Route 20
• Louisiana Highway 20
• * Louisiana State Route 20
• Maryland Route 20
• Massachusetts Route 20
• M-20
• Minnesota State Highway 20
• * County Road 20
• Missouri Route 20
• Nevada State Route 20
• New Jersey Route 20
• * County Route 20
• New Mexico State Road 20
• New York State Route 20
• * New York State Route 20N
• * New York State Route 20SY
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• * County Route 20
• North Carolina Highway 20
• North Dakota Highway 20
• Ohio State Route 20
• Oklahoma State Highway 20
• South Carolina Highway 20
• South Dakota Highway 20
• Tennessee State Route 20
• Texas State Highway 20
• * Texas State Highway Loop 20
• * Farm to Market Road 20
• * Texas Park Road 20
• Utah State Route 20
• Virginia State Route 20
• Washington State Route 20
• West Virginia Route 20
• Wisconsin Highway 20

• Puerto Rico Highway 20
• U.S. Virgin Islands Highway 20