The following highways are numbered 123:

Australia

- Now Newcastle Inner City Bypass

Brazil

• SP-123 (Rodovia Floriano Rodrigues Pinheiro)

Canada

• New Brunswick Route 123
• Ontario Highway 123 (former)
• Prince Edward Island Route 123
• Saskatchewan Highway 123

Costa Rica

• National Route 123

India

• National Highway 123 (India) (NH 123) in the states of Rajasthan and Uttar Pradesh

Japan

• Japan National Route 123

Malaysia

• Malaysia Federal Route 123 (Jalan Rasau Kerteh Selatan), Terengganu, Malaysia

Mexico

• Mexican Federal Highway 123 (Carretera Federal 123)

Nigeria

• A123 highway (Nigeria)

Spain

• N-123 road (Spain)

United States

• U.S. Route 123
  • U.S. Route 123 (Kentucky) (former)
• Alabama State Route 123
• Arkansas Highway 123
• California State Route 123
• Connecticut Route 123
• Florida State Road 123
  • County Road 123 (Baker County, Florida)
• Georgia State Route 123
• Hawaii Route 123 (former)
• Illinois Route 123
• Indiana State Road 123 (former)
• Iowa Highway 123 (former)
• K-123 (Kansas highway)
• Kentucky Route 123
• Louisiana Highway 123
• Maine State Route 123
• Maryland Route 123 (former)
• Massachusetts Route 123
• M-123 (Michigan highway)
• Minnesota State Highway 123
• Missouri Route 123
• New Hampshire Route 123
  • New Hampshire Route 123A
• County Route 123 (Bergen County, New Jersey)
• New York State Route 123
  • County Route 123 (Jefferson County, New York)
  • County Route 123 (Niagara County, New York)
• North Carolina Highway 123
• Ohio State Route 123
• Oklahoma State Highway 123
• Pennsylvania Route 123 (former)
• Rhode Island Route 123
• South Dakota Highway 123
• Tennessee State Route 123
• Texas State Highway 123
  • Texas State Highway Loop 123
  • Farm to Market Road 123
• Utah State Route 123
• Vermont Route 123
• Virginia State Route 123
  • Virginia State Route 123 (1923-1928) (former)
  • Virginia State Route 123 (1928-1933) (former)
  • Virginia State Route 123 (1933-1940) (former)
• Washington State Route 123
• West Virginia Route 123
• Wisconsin Highway 123

Territories

• Puerto Rico Highway 123

This article includes a list of roads, streets, highways, or other routes that are associated with the same title.
If an internal link led you here, you may wish to change the link to point directly to the intended article.