List of highways numbered 456

The following highways are numbered 456:

Japan

 * Japanese National Route Sign 0456.svg Japan National Route 456

United States

 * Louisiana 456.svg Louisiana Highway 456
 * MD Route 456.svg Maryland Route 456
 * New Mexico 456.svg New Mexico State Road 456
 * NY-456.svg New York State Route 456
 * PA-456.svg Pennsylvania Route 456
 * Ellipse sign 456.svg Puerto Rico Highway 456
 * Texas FM 456.svg Farm to Market Road 456