The following highways are numbered 78:
International Asian Highway 78 European route E78
Australia Waterfall Way – New South Wales State Route B78
China G78 Expressway
Greece EO78 road
Iran Road 78
Korea, South Gukjido 78
New Zealand New Zealand State Highway 78 – New Zealand's shortest State Highway
Philippines N78 highway (Philippines)
United States Interstate 78 U.S. Route 78 Alabama State Route 78 County Route 78 (Lee County, Alabama) Arizona State Route 78 Arkansas Highway 78 California State Route 78 Colorado State Highway 78 Connecticut Route 78 Florida State Road 78 County Road 78 (Glades County, Florida) County Road 78A (Glades County, Florida) County Road 78B (Glades County, Florida) County Road 78 (Hendry County, Florida) County Road 78A (Hendry County, Florida) County Road 78 (Lee County, Florida) County Road 78A (Lee County, Florida) Georgia State Route 78 Hawaii Route 78 Idaho State Highway 78 Illinois Route 78 Iowa Highway 78 K-78 (Kansas highway) Kentucky Route 78 Louisiana Highway 78 Maryland Route 78 (former) Massachusetts Route 78 M-78 (Michigan highway) Minnesota State Highway 78 County Road 78 (Ramsey County, Minnesota) County Road 78 (Scott County, Minnesota) Missouri Route 78 Missouri Route 78 (1922) (former) Montana Highway 78 Nebraska Highway 78 Nebraska Spur 78B Nebraska Spur 78C Nebraska Spur 78D Nebraska Spur 78E Nebraska Spur 78F Nebraska Spur 78H Nebraska Spur 78J Nebraska Recreation Road 78K Nevada State Route 78 (former) New Hampshire Route 78 County Route 78 (Bergen County, New Jersey) New Mexico State Road 78 New York State Route 78 County Route 78 (Chemung County, New York) County Route 78 (Dutchess County, New York) County Route 78 (Herkimer County, New York) County Route 78 (Jefferson County, New York) County Route 78 (Lewis County, New York) County Route 78 (Madison County, New York) County Route 78 (Monroe County, New York) County Route 78 (Montgomery County, New York) County Route 78 (Niagara County, New York) County Route 78 (Orange County, New York) County Route 78 (Steuben County, New York) County Route 78 (Suffolk County, New York) County Route 78 (Warren County, New York) North Carolina Highway 78 Ohio State Route 78 Oklahoma State Highway 78 Oregon Route 78 Pennsylvania Route 78 (former) Rhode Island Route 78 Tennessee State Route 78 Texas State Highway 78 Texas State Highway Spur 78 Farm to Market Road 78 Urban Road 78 (signed as Farm to Market Road 78) Utah State Route 78 Vermont Route 78 Virginia State Route 78 Wisconsin Highway 78 Wyoming Highway 78
Territories U.S. Virgin Islands Highway 78
See also A78 road