List of highways numbered 170
The following highways are numbered 170:
Canada
- New Brunswick Route 170
- Prince Edward Island Route 170
- Quebec Route 170
Costa Rica
- National Route 170
Japan
- Japan National Route 170
United Kingdom
- road
- B170 road
United States
- Interstate 170
- Interstate 170
- U.S. Route 170
- Alabama State Route 170
- Arizona State Route 170
- Arkansas Highway 170
- California State Route 170
- Colorado State Highway 170
- Georgia State Route 170
- Illinois Route 170
- K-170
- Kentucky Route 170
- Louisiana Highway 170
- Maine State Route 170
- Maryland Route 170
- M-170
- Nevada State Route 170
- New Jersey Route 170
- New Mexico State Road 170
- New York State Route 170
- * New York State Route 170A
- Ohio State Route 170
- Pennsylvania Route 170
- South Carolina Highway 170
- Tennessee State Route 170
- Texas State Highway 170
- * Texas State Highway Loop 170
- * Farm to Market Road 170
- Utah State Route 170
- Virginia State Route 170
- Washington State Route 170
- Wisconsin Highway 170
- Wyoming Highway 170