The following highways have been numbered 74:

• Newfoundland and Labrador Route 74

• EO74 road

• National Highway 74 (India)

• National Route 74

• Mexican Federal Highway 74

• New Zealand State Highway 74
  • New Zealand State Highway 74A

• N74 highway (Philippines)

• Prov 74 Provincial Highway 74 (Taiwan), the longest provincial highway in Taiwan.

• M74 motorway
• A74 road

• Interstate 74
• U.S. Route 74
• Alabama State Route 74
• Arizona State Route 74
  • Arizona State Route 74 (former)
• Arkansas Highway 74
• California State Route 74
• Colorado State Highway 74
• Connecticut Route 74
• Florida State Road 74 (former)
  • County Road 74 (Charlotte County, Florida)
  • County Road 74 (Glades County, Florida)
• Georgia State Route 74
• Idaho State Highway 74
• Illinois Route 74 (former)
• Iowa Highway 74 (1920–1941) (former)
• K-74 (Kansas highway)
• Kentucky Route 74
• Louisiana Highway 74
  • Louisiana State Route 74 (former)
• Maryland Route 74 (former)
• M-74 (Michigan highway)
• Minnesota State Highway 74
  • County Road 74 (Dakota County, Minnesota)
• Missouri Route 74
• Nebraska Highway 74
• Nevada State Route 74 (former)
• New Jersey Route 74 (former)
  • County Route 74 (Bergen County, New Jersey)
• New Mexico State Road 74
• New York State Route 74
  • County Route 74 (Dutchess County, New York)
  • County Route 74 (Herkimer County, New York)
  • County Route 74 (Madison County, New York)
  • County Route 74A (Oneida County, New York)
  • County Route 74 (Rensselaer County, New York)
  • County Route 74 (Rockland County, New York)
  • County Route 74 (Schenectady County, New York)
  • County Route 74 (Suffolk County, New York)
  • County Route 74 (Sullivan County, New York)
  • County Route 74 (Washington County, New York)
    • County Route 74A (Washington County, New York)
• North Carolina Highway 74 (temporary)
• North Carolina Highway 74 (1921-1934) (former)
• Ohio State Route 74 (1923) (former)
• Oklahoma State Highway 74
  • Oklahoma State Highway 74A
  • Oklahoma State Highway 74B
  • Oklahoma State Highway 74C
  • Oklahoma State Highway 74D
  • Oklahoma State Highway 74E
  • Oklahoma State Highway 74F
• Oregon Route 74
• Pennsylvania Route 74
• Tennessee State Route 74
• Texas State Highway 74 (one former highway; one proposed highway)
  • Texas State Highway 74A (former)
  • Texas State Highway Spur 74
  • Farm to Market Road 74
  • Texas Park Road 74
• Utah State Route 74
• Vermont Route 74
• Virginia State Route 74
• West Virginia Route 74
• Wisconsin Highway 74
• Wyoming Highway 74

Territories

• U.S. Virgin Islands Highway 74

• A74 (disambiguation)