Route 104, or Highway 104, may refer to:

Brazil

• BR-104

Canada

• New Brunswick Route 104
• Nova Scotia Highway 104 (Trans-Canada Highway)
• Prince Edward Island Route 104
• Quebec Route 104

China

• China National Highway 104

Costa Rica

• National Route 104

Japan

• Japan National Route 104

Korea, South

• Namhae Expressway Branch 2

Philippines

• N104 highway (Philippines)

United States

• U.S. Route 104 (former)
• Alabama State Route 104
• Arkansas Highway 104
  • Arkansas Highway 104 (1926–2000) (former)
• California State Route 104
• Connecticut Route 104
• Florida State Road 104
• Georgia State Route 104
• Illinois Route 104
• Indiana State Road 104
• K-104 (Kansas highway)
• Kentucky Route 104
• Louisiana Highway 104
• Maine State Route 104
• Maryland Route 104
• Massachusetts Route 104
• M-104 (Michigan highway)
• Minnesota State Highway 104
• Missouri Route 104
• Nebraska Highway 104 (1935–1950) (former)
  • Nebraska Highway 104 (1950–1957) (former)
  • Nebraska State Spur 104 (former)
• New Hampshire Route 104
• County Route 104 (Bergen County, New Jersey)
  • County Route S104 (Bergen County, New Jersey)
• New Mexico State Road 104
• New York State Route 104
  • County Route 104 (Cortland County, New York)
  • County Route 104 (Dutchess County, New York)
  • County Route 104 (Fulton County, New York)
  • County Route 104 (Montgomery County, New York)
  • County Route 104 (Nassau County, New York)
  • County Route 104 (Niagara County, New York)
  • County Route 104 (Orleans County, New York)
  • County Route 104 (Rensselaer County, New York)
  • County Route 104 (Suffolk County, New York)
  • County Route 104 (Sullivan County, New York)
  • County Route 104 (Ulster County, New York)
  • County Route 104 (Westchester County, New York)
• North Carolina Highway 104
• Ohio State Route 104
• Oklahoma State Highway 104
• Oregon Route 104
• Pennsylvania Route 104
• Rhode Island Route 104
• Tennessee State Route 104
• Texas State Highway 104 (former)
  • Farm to Market Road 104
• Utah State Route 104
• Vermont Route 104
• Virginia State Route 104 (1923-1928) (former)
  • Virginia State Route 104 (1928-1933) (former)
  • Virginia State Route 104 (1933-1949) (former)
  • Virginia State Route 104 (pre-2001) (former)
• Washington State Route 104
• West Virginia Route 104
• Wisconsin Highway 104

Territories

• Puerto Rico Highway 104
• U.S. Virgin Islands Highway 104

See also

• List of highways numbered 104A
• List of highways numbered 104B
• List of A104 roads
• B104 road
• D104 road
• N104 (France)
• P104
• R104 road (Ireland)
• R104 (South Africa)