List of highways numbered 100

Several highways are numbered 100:

Australia

 * Great Ocean Road, Victoria
 * Surf Coast Highway, Victoria
 * Flinders Highway, South Australia
 * Lincoln Highway, South Australia

Canada

 * Alberta Highway 100 (Sherwood Park Freeway) (unsigned)
 * Manitoba Highway 100.svg Manitoba Highway 100 (Perimeter Highway)
 * NB 100.svg New Brunswick Route 100
 * NL Route 100.svg Newfoundland and Labrador Route 100
 * Niagara Regional Road 100.svg Niagara Regional Road 100, Ontario
 * Ontario 100.svg former Highway 100 (Ontario)

Costa Rica

 * CR RNS 100.svg National Route 100

Croatia

 * Državna cesta D100.svg D100 road

Germany

 * Bundesautobahn 100 number.svg Bundesautobahn 100, the Berliner Stadtring (Berlin City Ring Road)
 * Bundesstraße 100 number.svg Bundesstraße 100

India

 * National Highway 100 (former, now National Highway 522 (India))

Korea, South

 * Korea Expressway No.100.svg Seoul Ring Expressway

Malaysia

 * A100 road (Malaysia), a road in Perak
 * Jkr-ft100.png Federal Route 100 (Lumut Bypass), a highway bypass in Manjung district, Perak

Mexico

 * Carretera estatal 100 (Sonora).svg Sonora State Highway 100

Netherlands

 * NLD-S100.svg Stadsroute 100 (Amsterdam), the city center ring road

Nigeria

 * NGA road F100.svg F100 highway (Nigeria)

Philippines

 * N100 (Philippines).svg N100 highway (Philippines)

Poland

 * DW100-PL.svg Voivodeship road 100 (Poland) in the Pomeranian Voivodeship

Serbia

 * R100-SRB.svg State Road 100 (Serbia), an IIA-class road connecting Horgoš with Batajnica.

Turkey

 * State road D.100 (Turkey), a west–east state road running from the Bulgarian border to Iranian border.

United Kingdom

 * , part of the London Inner Ring Road

United States

 * Alabama 100.svg Alabama State Route 100
 * Arkansas 100.svg Arkansas Highway 100
 * California 100.svg California State Route 100
 * Colorado 100.svg Colorado State Highway 100
 * Connecticut Highway 100.svg Connecticut Route 100
 * Ellipse sign 100.svg Delaware Route 100
 * Florida 100.svg Florida State Road 100
 * Georgia 100.svg Georgia State Route 100
 * Illinois 100.svg Illinois Route 100
 * Indiana 100.svg Indiana State Road 100 (former)
 * Elongated circle 100.svg Iowa Highway 100
 * K-100.svg K-100 (Kansas highway) (former)
 * Elongated circle 100.svg Kentucky Route 100
 * Louisiana 100.svg Louisiana Highway 100
 * MA Route 100.svg Maine State Route 100
 * MD Route 100.svg Maryland Route 100
 * MD Route 100.svg Maryland Route 100 (1930s-1950s)
 * MD Route 100.svg Maryland Route 100 (former)
 * Maryland Route 100J
 * Maryland Route 100L
 * Maryland Route 100M
 * Maryland Route 100N
 * Maryland Route 100O
 * Maryland Route 100P
 * Maryland Route 100Q
 * Maryland Route 100R
 * Maryland Route 100S
 * Maryland Route 100T
 * Maryland Route 100U
 * Maryland Route 100V
 * Maryland Route 100W
 * Maryland Route 100X
 * M-100.svg M-100 (Michigan highway)
 * MN-100.svg Minnesota State Highway 100
 * MO-100.svg Missouri Route 100
 * N-100 1967.svg Nebraska Highway 100 (former)
 * NJ 100 (cutout).svg New Jersey Route 100 (former)
 * Bergen County 100.svg County Route 100 (Bergen County, New Jersey)
 * NY-100.svg New York State Route 100
 * CR 100 jct wide.svg County Route 100 (Cortland County, New York)
 * Dutchess County Route 100 NY.svg County Route 100 (Dutchess County, New York)
 * Rockland County Route 100 NY.svg County Route 100 (Rockland County, New York)
 * Suffolk County Route 100 NY.svg County Route 100 (Suffolk County, New York)
 * CR 100 jct wide.svg County Route 100 (Wayne County, New York)
 * NC 100.svg North Carolina Highway 100
 * OH-100.svg Ohio State Route 100
 * Oklahoma State Highway 100.svg Oklahoma State Highway 100
 * PA-100.svg Pennsylvania Route 100
 * Rhode Island 100.svg Rhode Island Route 100
 * SD 100.svg South Dakota Highway 100 (proposed)
 * Tennessee 100.svg Tennessee State Route 100
 * Texas 100.svg Texas State Highway 100
 * Texas Spur 100.svg Texas State Highway Spur 100
 * Texas FM 100.svg Farm to Market Road 100
 * Texas Park Road 100.svg Texas Park Road 100
 * Utah SR 100.svg Utah State Route 100
 * Vermont 100.svg Vermont Route 100
 * Virginia 100.svg Virginia State Route 100
 * WA-100.svg Washington State Route 100
 * WV-100.svg West Virginia Route 100
 * WIS 100.svg Wisconsin Highway 100


 * Territories:
 * PR secondary 100.svg Puerto Rico Highway 100