List of highways numbered 403

The following highways are numbered 403:

Canada

 * Manitoba secondary 403.svg Manitoba Provincial Road 403
 * NL Route 403.svg Newfoundland and Labrador Route 403
 * Ontario 403.svg Highway 403 (Ontario)

Costa Rica

 * CR RNT 403.svg National Route 403

Croatia

 * Državna_cesta_D403.svg D403 road

Hungary

 * 403 (Hu) Otszogletu zold tabla.svg Main road 403 (Hungary)

Japan

 * Japanese National Route Sign 0403.svg Japan National Route 403

Thailand

 * Thai Highway-403.svg Thailand Route 403

United States

 * Georgia 403.svg Georgia State Route 403 (unsigned designation for Interstate 85)
 * Indiana 403.svg Indiana State Road 403 (former)
 * New York:
 * NY-403.svg New York State Route 403
 * County Route 403 (Albany County, New York)
 * Erie County 403 NY.svg County Route 403 (Erie County, New York)
 * NC 403.svg North Carolina Highway 403
 * PA-403.svg Pennsylvania Route 403
 * Ellipse sign 403.svg Puerto Rico Highway 403
 * Rhode Island 403.svg Rhode Island Route 403
 * South Carolina 403.svg South Carolina Highway 403
 * Virginia 403.svg Virginia State Route 403
 * WA-403.svg Washington State Route 403