List of highways numbered 78
The following highways are numbered 78:
International
Australia
 Waterfall Way – New South Wales State Route B78 Waterfall Way – New South Wales State Route B78
China
Greece
 EO78 road EO78 road
Iran
Korea, South
- Gukjido 78
New Zealand
 New Zealand State Highway 78 – New Zealand's shortest State Highway New Zealand State Highway 78 – New Zealand's shortest State Highway
Philippines
United States
 Interstate 78 Interstate 78
 U.S. Route 78 U.S. Route 78
 Alabama State Route 78 Alabama State Route 78
 Arizona State Route 78 Arizona State Route 78
 Arkansas Highway 78 Arkansas Highway 78
 California State Route 78 California State Route 78
 Colorado State Highway 78 Colorado State Highway 78
 Connecticut Route 78 Connecticut Route 78
 Florida State Road 78 Florida State Road 78
 Georgia State Route 78 Georgia State Route 78
 Hawaii Route 78 Hawaii Route 78
 Idaho State Highway 78 Idaho State Highway 78
 Illinois Route 78 Illinois Route 78
 Iowa Highway 78 Iowa Highway 78
 K-78 (Kansas highway) K-78 (Kansas highway)
 Kentucky Route 78 Kentucky Route 78
 Louisiana Highway 78 Louisiana Highway 78
 Maryland Route 78 (former) Maryland Route 78 (former)
 Massachusetts Route 78 Massachusetts Route 78
 M-78 (Michigan highway) M-78 (Michigan highway)
 Minnesota State Highway 78 Minnesota State Highway 78
 Missouri Route 78 Missouri Route 78- Missouri Route 78 (1922) (former)
 
 Montana Highway 78 Montana Highway 78
 Nebraska Highway 78 Nebraska Highway 78
 Nevada State Route 78 (former) Nevada State Route 78 (former)
 New Hampshire Route 78 New Hampshire Route 78
 County Route 78 (Bergen County, New Jersey) County Route 78 (Bergen County, New Jersey)
 New Mexico State Road 78 New Mexico State Road 78
 New York State Route 78 New York State Route 78 County Route 78 (Chemung County, New York) County Route 78 (Chemung County, New York)
 County Route 78 (Dutchess County, New York) County Route 78 (Dutchess County, New York)
 County Route 78 (Herkimer County, New York) County Route 78 (Herkimer County, New York)
 County Route 78 (Jefferson County, New York) County Route 78 (Jefferson County, New York)
 County Route 78 (Lewis County, New York) County Route 78 (Lewis County, New York)
 County Route 78 (Madison County, New York) County Route 78 (Madison County, New York)
 County Route 78 (Monroe County, New York) County Route 78 (Monroe County, New York)
 County Route 78 (Montgomery County, New York) County Route 78 (Montgomery County, New York)
 County Route 78 (Niagara County, New York) County Route 78 (Niagara County, New York)
 County Route 78 (Orange County, New York) County Route 78 (Orange County, New York)
 County Route 78 (Steuben County, New York) County Route 78 (Steuben County, New York)
 County Route 78 (Suffolk County, New York) County Route 78 (Suffolk County, New York)
 County Route 78 (Warren County, New York) County Route 78 (Warren County, New York)
 
 North Carolina Highway 78 North Carolina Highway 78
 Ohio State Route 78 Ohio State Route 78
 Oklahoma State Highway 78 Oklahoma State Highway 78
 Oregon Route 78 Oregon Route 78
.svg.png) Pennsylvania Route 78 (former) Pennsylvania Route 78 (former)
 Rhode Island Route 78 Rhode Island Route 78
 Tennessee State Route 78 Tennessee State Route 78
 Texas State Highway 78 Texas State Highway 78 Texas State Highway Spur 78 Texas State Highway Spur 78
 Farm to Market Road 78 Farm to Market Road 78
 Urban Road 78 (signed as Farm to Market Road 78) Urban Road 78 (signed as Farm to Market Road 78)
 
 Utah State Route 78 Utah State Route 78
 Vermont Route 78 Vermont Route 78
 Virginia State Route 78 Virginia State Route 78
 Wisconsin Highway 78 Wisconsin Highway 78
 Wyoming Highway 78 Wyoming Highway 78
- Territories
 U.S. Virgin Islands Highway 78 U.S. Virgin Islands Highway 78
See also
| Preceded by 77 | Lists of highways 78 | Succeeded by 79 | 




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