List of highways numbered 340
The following highways are numbered 340:
Canada
- Manitoba [Provincial Road 340]
- New Brunswick Route 340
- Newfoundland and Labrador Route 340
- Nova Scotia Route 340
- Prince [Edward Island Route 340]
- Quebec Route 340
- Saskatchewan Highway 340
India
Japan
United Kingdom
United States
- Interstate 340
- U.S. Route 340
- Arkansas Highway 340
- Colorado [State Highway 340]
- Georgia [State Route 340]
- Hawaii Route 340
- Indiana [State Road 340]
- Missouri Route 340
- Nevada State Route 340
- New York State Route 340
- Ohio State Route 340
- Pennsylvania Route 340
- Texas:
- * Texas State Highway 340
- * Texas State Highway Loop 340
- Wyoming Highway 340