List of highways numbered 451

The following highways are numbered 451:

Canada

• Ontario Highway 451, commonly called the Queen Elizabeth Way.

Japan

• Japan National Route 451

Korea, South

• Jungbu Naeryuk Expressway Branch

United Kingdom

• A451 from Stourbridge to Great Witley

United States

• Florida State Road 451
• Kentucky Route 451
• Louisiana Highway 451
• Maryland Route 451 (former)
• New Mexico State Road 451
• Oregon Route 451
• Puerto Rico Highway 451
• Tennessee State Route 451
• Texas
  • Farm to Market Road 451
• Wyoming Highway 451