List of highways numbered 342

The following highways are numbered 342:

Australia
- Lockington Road

Canada

 * Manitoba Provincial Road 342
 * Newfoundland and Labrador Route 342
 * Prince Edward Island Route 342
 * Qc342.svg Quebec Route 342
 * Saskatchewan Highway 342

Japan

 * Japanese National Route Sign 0342.svg Japan National Route 342

Nigeria

 * NGA road A342.svg A342 highway (Nigeria)

United States

 * Arkansas 342.svg Arkansas Highway 342
 * Florida:
 * Gilchrist County 342.svg County Road 342 (Gilchrist County, Florida)
 * County Road 342 (Leon County, Florida)
 * Georgia 342.svg Georgia State Route 342 (former)
 * Indiana 342.svg Indiana State Road 342
 * Louisiana 342.svg Louisiana Highway 342
 * MD Route 342.svg Maryland Route 342
 * Nevada 342.svg Nevada State Route 342
 * New York:
 * NY-342.svg New York State Route 342
 * New York State Route 342 (former)
 * OH-342.svg Ohio State Route 342
 * Ellipse sign 342.svg Puerto Rico Highway 342
 * Secondary Tennessee 342.svg Tennessee State Route 342
 * Texas:
 * Texas 342.svg Texas State Highway 342
 * Texas Spur 342.svg Texas State Highway Spur 342
 * Virginia 342.svg Virginia State Route 342
 * WY-342.svg Wyoming Highway 342