The following highways are numbered 124:
Cambodia National Road 124 (Cambodia)
Canada New Brunswick Route 124 Ontario Highway 124 Prince Edward Island Route 124
Costa Rica National Route 124
Japan Japan National Route 124
Nigeria A124 highway (Nigeria)
United Kingdom road B124 road
United States Interstate 124 (unsigned) U.S. Route 124 (former) Alabama State Route 124 County Route 124 (Lee County, Alabama) Arkansas Highway 124 California State Route 124 Connecticut Route 124 County Road 124 (Baker County, Florida) County Road 124 (Levy County, Florida) Georgia State Route 124 Illinois Route 124 Indiana State Road 124 Iowa Highway 124 (former) K-124 (Kansas highway) (former) Kentucky Route 124 Louisiana Highway 124 Louisiana State Route 124 (former) Maine State Route 124 Maryland Route 124 Massachusetts Route 124 M-124 (Michigan highway) Minnesota State Highway 124 (former) Missouri Route 124 New Hampshire Route 124 New Jersey Route 124 County Route 124 (Bergen County, New Jersey) New Mexico State Road 124 New York State Route 124 County Route 124 (Montgomery County, New York) County Route 124 (Onondaga County, New York) County Route 124 (Steuben County, New York) North Carolina Highway 124 Ohio State Route 124 Pennsylvania Route 124 South Carolina Highway 124 Tennessee State Route 124 Texas State Highway 124 Texas State Highway Loop 124 Farm to Market Road 124 Utah State Route 124 Virginia State Route 124 Virginia State Route 124 (1924-1926) (former) Virginia State Route 124 (1928-1932) (former) Virginia State Route 124 (1933-1937) (former) Virginia State Route 124 (1937-1943) (former) Washington State Route 124 Wisconsin Highway 124
Territories Puerto Rico Highway 124