List of highways numbered 405 explained
Route 405 or Highway 405 may refer to:
Canada
Costa Rica
Japan
United Kingdom
United States
- Interstate 405
- Florida:
- Florida State Road 405
- County Road 405 (Brevard County, Florida)
- Georgia State Route 405 (unsigned designation for Interstate 95)
- Maryland Route 405
- New York:
- New York State Route 405 (former)
- County Route 405 (Albany County, New York)
- County Route 405 (Erie County, New York)
- Pennsylvania Route 405
- Puerto Rico Highway 405
- Virginia State Route 405