The following highways are numbered 34: for a list of roads numbered N34 : see list of N34 roads.

• AH34 Asian Highway 34
• E34 European route E34

• Cox Peninsula Road (Northern Territory)
• (Sydney)
• Maroondah Highway (Victoria)

• Alberta Highway 34 (defunct)
• Manitoba Highway 34
• Ontario Highway 34
• Saskatchewan Highway 34

• National Route 34

• part of I/34 Highway; Czech: Silnice I/34

• National Highway 34 (India)

• Highway 34 (Israel)

• Autostrada A34

• Japan National Route 34
• Nagasaki Expressway
• Ōita Expressway

• National Route 34

• New Zealand State Highway 34

• Highway 34 (Debaratana Road)

• British A34 (Winchester-Salford)

• U.S. Route 34
• Alabama State Route 34
• California State Route 34
  • County Route J34 (California)
  • County Route S34 (California)
• Connecticut Route 34
• Delaware Route 34 (former)
• Georgia State Route 34
  • Georgia State Route 34 (1919–1926) (former)
• Hawaii Route 34 (former)
• Idaho State Highway 34
• Illinois Route 34
• Indiana State Road 34 (former)
• K-34 (Kansas highway)
• Kentucky Route 34
• Louisiana Highway 34
• Maryland Route 34
• M-34 (Michigan highway)
• Minnesota State Highway 34
  • County Road 34 (Hennepin County, Minnesota)
  • County Road 34 (Ramsey County, Minnesota)
• Missouri Route 34
• Nebraska Highway 34 (former)
  • Nebraska Link 34H
  • Nebraska Spur 34C
  • Nebraska Spur 34D
  • Nebraska Recreation Road 34J
  • Nebraska Recreation Road 34K
  • Nebraska Recreation Road 34L
• Nevada State Route 34 (former)
• New Jersey Route 34
  • County Route 34 (Bergen County, New Jersey)
  • County Route 34 (Monmouth County, New Jersey)
• New Mexico State Road 34
• New York State Route 34
  • County Route 34 (Cayuga County, New York)
  • County Route 34 (Chautauqua County, New York)
  • County Route 34 (Clinton County, New York)
  • County Route 34 (Dutchess County, New York)
  • County Route 34 (Erie County, New York)
  • County Route 34 (Genesee County, New York)
  • County Route 34 (Madison County, New York)
  • County Route 34 (Onondaga County, New York)
  • County Route 34 (Orange County, New York)
  • County Route 34 (Oswego County, New York)
  • County Route 34 (Otsego County, New York)
  • County Route 34 (Putnam County, New York)
  • County Route 34 (Schenectady County, New York)
  • County Route 34 (St. Lawrence County, New York)
  • County Route 34 (Steuben County, New York)
  • County Route 34 (Suffolk County, New York)
  • County Route 34 (Ulster County, New York)
  • County Route 34 (Warren County, New York)
• North Carolina Highway 34
• North Dakota Highway 34
• Ohio State Route 34
• Oklahoma State Highway 34
  • Oklahoma State Highway 34C
• Oregon Route 34
• Pennsylvania Route 34
• South Carolina Highway 34
• South Dakota Highway 34
• Tennessee State Route 34
• Texas State Highway 34
  • Texas State Highway Loop 34
  • Farm to Market Road 34
  • Texas Park Road 34
• Utah State Route 34
• Virginia State Route 34
  • Virginia State Route 34 (1923-1933) (former)
  • Virginia State Route 34 (1933-1940) (former)
• West Virginia Route 34
• Wisconsin Highway 34
• Wyoming Highway 34

Territories

• Guam Highway 34
• Puerto Rico Highway 34

• A34 (disambiguation)#Roads
• List of highways numbered 34A
• List of highways numbered 34B