List of highways numbered 78
The following highways are numbered 78:
International
Australia
- Waterfall Way – New South Wales State Route B78
China
Greece
Iran
Korea, South
New Zealand
- New Zealand [State Highway 78] – New Zealand's shortest State Highway
Philippines
United States
- Interstate 78
- U.S. Route 78
- Alabama State Route 78
- * County Route 78
- Arizona State Route 78
- Arkansas Highway 78
- California State Route 78
- Colorado State Highway 78
- Connecticut Route 78
- Florida State Road 78
- * Road 78 (Glades County, Florida)">Road 78 (Iran)">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
- 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)
- 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
- 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
- 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
- Utah State Route 78
- Vermont Route 78
- Virginia State Route 78
- Wisconsin Highway 78
- Wyoming Highway 78