List of highways numbered 20
Route 20, or Highway 20, may refer to:
International
- European route E20
Australia
- Sturt Highway
- Yarra Bank Highway
Brazil
- BR-020
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
Cuba
- Highway 6–20
Czech Republic
- I/20 Highway; Czech: Silnice I/20
Ecuador
- Ecuador Highway 20
Greece
- EO20 road
India
- National Highway 20
Israel
- Ayalon Highway
Italy
- Autostrada A20
Ireland
- M20 motorway
- N20 road
Japan
- Japan National Route 20
- Chūō Expressway
Korea, South
- Iksan–Pohang Expressway
- National Route 20
- Gukjido 20
New Zealand
- New Zealand State Highway 20
- * New Zealand State Highway 20A
- * New Zealand State Highway 20B
Paraguay
- Image:R20-PY.svg|20px| National Route 20
Turkey
- , a motorway in Turkey as the ring road in Ankara.
United Kingdom
- British A20
- British M20
- A20 road
United States
- Interstate 20
- U.S. Route 20
- * U.S. Route 20N
- * U.S. Route 20S
- New England Route 20
- Alabama State Route 20
- * County 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
Vietnam
- National Route 20
Zambia
- M20 road