List of highways numbered 408

Route 408 or Highway 408 may refer to:

Canada

 * Manitoba secondary 408.svg Manitoba Provincial Road 408

Costa Rica

 * CR RNT 408.svg National Route 408

Japan

 * Japanese National Route Sign 0408.svg Japan National Route 408

United States

 * Toll Florida 408.svg Florida State Road 408
 * Georgia 408.svg Georgia State Route 408 (unsigned designation for Interstate 475
 * Louisiana 408.svg Louisiana Highway 408
 * MD Route 408.svg Maryland Route 408
 * Maryland Route 408
 * New York:
 * NY-408.svg New York State Route 408
 * New York State Route 408A (former)
 * New York State Route 408 (former)
 * County Route 408 (Albany County, New York)
 * Erie County 408 NY.svg County Route 408 (Erie County, New York)
 * PA-408.svg Pennsylvania Route 408
 * Ellipse sign 408.svg Puerto Rico Highway 408
 * Texas Spur 408.svg Texas State Highway Spur 408
 * Virginia 408.svg Virginia State Route 408 (former)