List of highways numbered 405
Route 405 or Highway 405 may refer to:
Canada
Costa Rica
Japan
United Kingdom
United States
- Interstate 405
- * Interstate 405 (California), a bypass of Los Angeles, California
- * Interstate 405 (Oregon), a bypass of Portland, Oregon
- * Interstate 405 (Washington), a bypass of Seattle, Washington
- Florida:
- * Florida [State Road 405]
- * County Road 405 (Brevard County, Florida)
- Georgia [State Route 405]
- Maryland Route 405
- New York:
- * New York State Route 405
- * 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