List of highways numbered 121

Route 121 or Highway 121 can refer to multiple roads:

Argentina

• File:RN121-AR.svg National Route 121

Canada

• File:NB 121.svg New Brunswick Route 121
• File:Ontario 121.svg Ontario Highway 121
• File:PEI Highway 121.svg Prince Edward Island Route 121

Costa Rica

• File:CR RNS 121.svg National Route 121

Japan

• File:Japanese National Route Sign 0121.svg Japan National Route 121

Nigeria

• File:NGA road A121.svg A121 highway (Nigeria)

United Kingdom

• road .
• B121 road.

United States

• File:US 121.svg U.S. Route 121 (proposed)
  • File:US 121 (1926).svg U.S. Route 121 (former)
• File:Alabama 121.svg Alabama State Route 121 (former)
• File:Arkansas 121.svg Arkansas Highway 121
• File:California 121.svg California State Route 121
• File:Colorado 121.svg Colorado State Highway 121
• File:Connecticut Highway 121.svg Connecticut Route 121
• File:Florida 121.svg Florida State Road 121
  • File:Alachua County 121A.svg County Road 121A (Alachua County, Florida)
  • File:Duval County Road 121 FL.svg County Road 121 (Duval County, Florida)
  • County Road 121 (Nassau County, Florida)
• File:Georgia 121.svg Georgia State Route 121
• File:HI-121.svg Hawaii Route 121
• File:Illinois 121.svg Illinois Route 121
• File:Indiana 121.svg Indiana State Road 121
• File:K-121.svg K-121 (Kansas highway) (former)
• File:Elongated circle 121.svg Kentucky Route 121
• File:Louisiana 121.svg Louisiana Highway 121
• File:Maine 121.svg Maine State Route 121
• File:MD Route 121.svg Maryland Route 121
• File:MA Route 121.svg Massachusetts Route 121
• File:M-121.svg M-121 (Michigan highway)
• File:MN-121.svg Minnesota State Highway 121
  • File:Hennepin County 121.svg County Road 121 (Hennepin County, Minnesota)
• File:MO-121.svg Missouri Route 121
• File:N-121.svg Nebraska Highway 121
• File:Nevada 121.svg Nevada State Route 121
• File:NH Route 121.svg New Hampshire Route 121
  • File:NH Route 121A.svg New Hampshire Route 121A
• File:New Mexico 121.svg New Mexico State Road 121
• File:NY-121.svg New York State Route 121
  • File:CR 121 jct.svg County Route 121 (Herkimer County, New York)
  • File:CR 121 jct.svg County Route 121 (Jefferson County, New York)
  • File:CR 121 jct.svg County Route 121 (Montgomery County, New York)
  • File:CR 121 jct.svg County Route 121 (Niagara County, New York)
  • File:CR 121 jct.svg County Route 121 (Seneca County, New York)
  • File:CR 121 jct.svg County Route 121 (Steuben County, New York)
  • File:Sullivan County Route 121 NY.svg County Route 121 (Sullivan County, New York)
• File:NC 121.svg North Carolina Highway 121
• File:OH-121.svg Ohio State Route 121
• File:PA-121.svg Pennsylvania Route 121
• File:Rhode Island 121.svg Rhode Island Route 121
• File:South Carolina 121.svg South Carolina Highway 121
• File:Texas 121.svg Texas State Highway 121
  • File:Toll Texas 121.svg former 121 Tollway (now Sam Rayburn Tollway)
  • File:Texas Loop 121.svg Texas State Highway Loop 121
  • File:Texas Spur 121.svg Texas State Highway Spur 121 (former)
  • File:Texas FM 121.svg Farm to Market Road 121
• File:Utah SR 121.svg Utah State Route 121
• File:Ellipse sign 121.svg Vermont Route 121
• File:Virginia 121.svg Virginia State Route 121
  • File:Virginia 121.svg Virginia State Route 121 (1923-1926) (former)
  • File:Virginia 121.svg Virginia State Route 121 (1927-1928) (former)
  • File:Virginia 121.svg Virginia State Route 121 (1928-1933) (former)
• File:WA-121.svg Washington State Route 121
• File:WIS 121.svg Wisconsin Highway 121

Territories

• File:PR secondary 121.svg Puerto Rico Highway 121

Preceded by 120

Lists of highways 121

Succeeded by 122