List of highways numbered 172
The following highways are numbered 172:
Canada
Ireland
Japan
United Kingdom
- road
- B172 road
United States
- Interstate 172
- Interstate 172
- Alabama State Route 172
- Arizona State Route 172
- California State Route 172
- Colorado State Highway 172
- Connecticut Route 172
- Georgia State Route 172
- Illinois Route 172
- Kentucky Route 172
- Louisiana Highway 172
- Maine State Route 172
- Maryland Route 172
- M-172 (Michigan highway)
- Minnesota State Highway 172
- Mississippi Highway 172
- Missouri Route 172
- Nevada State Route 172
- New Jersey Route 172
- New Mexico State Road 172
- New York State Route 172
- North Carolina Highway 172
- Ohio State Route 172
- Pennsylvania Route 172
- South Carolina Highway 172
- Tennessee State Route 172
- Texas State Highway 172
- * Texas State Highway Loop 172
- * Texas State Highway Spur 172
- * Farm to Market Road 172
- Utah State Route 172
- Virginia State Route 172
- Washington State Route 172
- Wisconsin Highway 172
- Wyoming Highway 172