The following highways are numbered 33:

International

• AH33 Asian Highway 33
• E33 European route E33

Australia

• South Arm Highway (Tasmania)

Canada

• Alberta Highway 33
• British Columbia Highway 33
• Bedford Bypass, also known as Nova Scotia Trunk 33
• Ontario Highway 33
• Saskatchewan Highway 33

Czech Republic

• I/33 Highway; Czech: Silnice I/33

Iceland

• Route 33 (Iceland)

India

• National Highway 33 (India)
• UP-SH-33(Mathura - Bareilly) (India)

Iran

• Road 33

Ireland

• N33 road (Ireland)

Italy

• Autostrada A33

Japan

• Japan National Route 33

Korea, South

• National Route 33

New Zealand

• New Zealand State Highway 33

Poland

• National road 33 (DK33)

Turkey

• O-33, a motorway in Turkey

United Kingdom

• British A33 (Southampton-Reading)

United States

• U.S. Route 33
• Alabama State Route 33
• Arkansas Highway 33
  • Arkansas Highway 33C
• California State Route 33
  • County Route J33 (California)
  • County Route S33 (California)
• Connecticut Route 33
• Florida State Road 33
  • County Road 33 (Lake County, Florida)
• Georgia State Route 33
• Hawaii Route 33 (former)
• Idaho State Highway 33
• Illinois Route 33
• Indiana State Road 33 (former)
  • County Road 33 (Elkhart County, Indiana)
• K-33 (Kansas highway)
• Kentucky Route 33
• Louisiana Highway 33
  • Louisiana State Route 33 (former)
• Maryland Route 33
• Massachusetts Route 33
• M-33 (Michigan highway)
• Minnesota State Highway 33
  • County Road 33 (Ramsey County, Minnesota)
  • County Road 33 (Sherburne County, Minnesota)
• Mississippi Highway 33
• Missouri Route 33
• Nebraska Highway 33
• Nevada State Route 33 (former)
• New Hampshire Route 33
• New Jersey Route 33
  • County Route 33 (Bergen County, New Jersey)
    • County Route S33 (Bergen County, New Jersey)
  • County Route 33 (Monmouth County, New Jersey)
• New York State Route 33
  • County Route 33 (Broome County, New York)
  • County Route 33 (Cattaraugus County, New York)
  • County Route 33 (Chautauqua County, New York)
  • County Route 33 (Dutchess County, New York)
  • County Route 33 (Erie County, New York)
  • County Route 33 (Lewis County, New York)
  • County Route 33 (Onondaga County, New York)
  • County Route 33 (Ontario County, New York)
  • County Route 33 (Orange County, New York)
  • County Route 33 (Oswego County, New York)
  • County Route 33 (Otsego County, New York)
  • County Route 33 (Putnam County, New York)
  • County Route 33 (Rockland County, New York)
  • County Route 33 (Saratoga County, New York)
  • County Route 33 (Schenectady County, New York)
  • County Route 33 (Schoharie County, New York)
  • County Route 33 (Suffolk County, New York)
  • County Route 33 (Sullivan County, New York)
  • County Route 33 (Tioga County, New York)
  • County Route 33 (Ulster County, New York)
  • County Route 33 (Yates County, New York)
• North Carolina Highway 33
• North Dakota Highway 33 (former)
• Ohio State Route 33 (1923) (former)
• Oklahoma State Highway 33
• Pennsylvania Route 33
• Rhode Island Route 33
• South Carolina Highway 33
• Tennessee State Route 33
• Texas State Highway 33
  • Texas State Highway Spur 33
  • Ranch to Market Road 33
  • Texas Park Road 33
• Utah State Route 33 (former)
• Virginia State Route 33
  • Virginia State Route 33 (1923–1933) (former)
  • Virginia State Route 33 (1933-1938) (former)
• West Virginia Route 33
• Wisconsin Highway 33
• Wyoming Highway 33

Territories

• Guam Highway 33
• Puerto Rico Highway 33
• U.S. Virgin Islands Highway 33