List of highways numbered 91

International

  •  E 91 European route E91

Australia

  •  Cairns Western Arterial Road
  •  Summerland Way

Canada

  • British Columbia Highway 91
    • British Columbia Highway 91A
  • Newfoundland and Labrador Route 91

China

  • China Expwy G91 sign with name.svg G91 Expressway

Iran

  • Iran First Level Road 91.png Road 91

Israel

  • ISR-HW-91.svg Highway 91 (Israel)

Korea, South

  • National Route 91

United States

    • I-91.svg Interstate 91
    • US 91.svg U.S. Route 91
    • Alabama 91.svg Alabama State Route 91
    • Arkansas 91.svg Arkansas Highway 91
    • California 91.svg California State Route 91
    • Colorado 91.svg Colorado State Highway 91
    • Toll Florida 91.svg Florida State Road 91 (unsigned designation for Florida’s Turnpike)
    • Georgia 91.svg Georgia State Route 91
      • Georgia 91W (1960).svg Georgia State Route 91W (former)
    • Illinois 91.svg Illinois Route 91
    • Iowa 91.svg Iowa Highway 91
    • Elongated circle 91.svg Kentucky Route 91