List of highways numbered 401

The following highways are numbered 401:

Canada

 * British Columbia Highway 401 (former)
 * Manitoba Provincial Road 401
 * Ontario 401.svg Ontario Highway 401

Costa Rica

 * CR RNT 401.svg National Route 401

Japan

 * Japanese National Route Sign 0401.svg Japan National Route 401

Norway

 * Fylkesvei 401.svg Norwegian County Road 401

Thailand

 * Thai Highway-401.svg Thailand Route 401

United States

 * US 401.svg U.S. Route 401
 * Florida:
 * Florida 401.svg Florida State Road 401
 * Brevard County 401.svg County Road 401 (Brevard County, Florida)
 * Georgia 401.svg Georgia State Route 401 (unsigned designation for Interstate 75)
 * Elongated circle 401.svg Kentucky Route 401
 * Nevada 401.svg Nevada State Route 401
 * New York:
 * NY-401.svg New York State Route 401 (former)
 * CR 401 jct wide.svg County Route 401 (Albany County, New York)
 * NC 401.svg North Carolina Highway 401 (former)
 * PA-401.svg Pennsylvania Route 401
 * Alternate plate.svg Truck plate.svg PA-401.svg Pennsylvania Route 401 Alternate Truck
 * Ellipse sign 401.svg Puerto Rico Highway 401
 * Rhode Island 401.svg Rhode Island Route 401
 * Virginia 401.svg Virginia State Route 401
 * WA-401.svg Washington State Route 401