List of highways numbered 422

The following highways are numbered 422:

Canada

 * Manitoba secondary 422.svg Manitoba Provincial Road 422
 * NL Route 422.svg Newfoundland and Labrador Route 422

Japan

 * Japanese National Route Sign 0422.svg Route 422 (Japan)

United States

 * I-422.svg Interstate 422 (future)
 * US 422.svg U.S. Route 422
 * Georgia 422.svg Georgia State Route 422 (unsigned designation for Georgia State Route 10 Loop)
 * Louisiana 422.svg Louisiana Highway 422
 * MD Route 422.svg Maryland Route 422
 * NY-422.svg New York State Route 422 (former)
 * OR 422.svg Oregon Route 422
 * OR 422S.svg Oregon Route 422S
 * Ellipse sign 422.svg Puerto Rico Highway 422
 * Secondary Tennessee 422.svg Tennessee State Route 422
 * Texas Spur 422.svg Texas State Highway Spur 422