List of highways numbered 340

The following highways are numbered 340:

Canada

 * Manitoba Provincial Road 340
 * NB 340.svg New Brunswick Route 340
 * Newfoundland and Labrador Route 340
 * Nova Scotia Route 340.svg Nova Scotia Route 340
 * Prince Edward Island Route 340
 * Qc340.svg Quebec Route 340
 * Saskatchewan Highway 340

India

 * NH340-IN.svg National Highway 340 (India)

Japan

 * Japanese National Route Sign 0340.svg Japan National Route 340

United States

 * US 340.svg U.S. Route 340
 * Arkansas 340.svg Arkansas Highway 340
 * Colorado 340.svg Colorado State Highway 340
 * Georgia 340.svg Georgia State Route 340 (former)
 * HI-340.svg Hawaii Route 340
 * Indiana 340.svg Indiana State Road 340
 * MO-340.svg Missouri Route 340
 * Nevada 340.svg Nevada State Route 340
 * NY-340.svg New York State Route 340
 * OH-340.svg Ohio State Route 340
 * PA-340.svg Pennsylvania Route 340
 * Texas:
 * Texas 340.svg Texas State Highway 340 (former)
 * Texas Loop 340.svg Texas State Highway Loop 340
 * WY-340.svg Wyoming Highway 340