List of highways numbered 391
The following highways are numbered 391:
Canada
- Manitoba Provincial Road 391
- Newfoundland and Labrador Route 391
- Quebec Route 391
Japan
- Japan National Route 391
United States
- Interstate 391
- Colorado State Highway 391
- Florida State Road 391
- New York State Route 391
- Puerto Rico Highway 391
- South Carolina Highway 391
- South Dakota Highway 391
- Tennessee State Route 391
- Virginia State Route 391
- Wyoming Highway 391