List of highways numbered 400

The following highways are numbered 400:

Australia

• Template:AUshield Murray Valley Highway

Canada

• File:Ontario 400.svg Ontario Highway 400

Croatia

• File:Državna cesta D400.svg D400 road

Cuba

• File:2–400 Cuba.png Vía Monumental (2–400)

Ireland

• File:R400 Regional Route Shield Ireland.png R400 road

Japan

• File:Japanese National Route Sign 0400.svg Japan National Route 400

Korea, South

• File:Korea Expressway No.400.svg Capital Region Second Ring Expressway

South Africa

• File:SA road R400.svg R400 road in the Eastern Cape

Spain

• File:ESP N-400.svg N-400 road

Turkey

• , a west–east state road in Turkey running from Datça, Muğla Province to Esendere at the Iranian border.

United Kingdom

• File:UK road A400.svg A400 road in London
• B400 road (Chancery Lane)

United States

• File:US 400.svg U.S. Route 400
• File:Arkansas 400.svg Arkansas Highway 400
• File:Florida 400.svg Florida State Road 400
• File:Georgia 400.svg Georgia State Route 400
• File:Elongated circle 400.svg Kentucky Route 400
• File:Louisiana 400 (2008).svg Louisiana Highway 400
• File:MD Route 400.svg Maryland Route 400, a former state highway
• File:Nevada 400.svg Nevada State Route 400
• New York:
  • File:NY-400.svg New York State Route 400
  • File:Erie County 400 NY.svg County Route 400 (Erie County, New York)
• File:NC 400.svg North Carolina Highway 400
• Pennsylvania Route 400 (official designation for Pennsylvania Route 380)
• File:Ellipse sign 400.svg Puerto Rico Highway 400
• File:South Carolina 400.svg South Carolina Highway 400
• File:Secondary Tennessee 400.svg Tennessee State Route 400
• Texas:
  • File:Texas Spur 400.svg Texas State Highway Spur 400
  • File:Texas FM 400.svg Farm to Market Road 400
• Utah:
  • Road 400 (Cottonwood Canyon Road)
• File:Virginia 400.svg Virginia State Route 400
  • Virginia State Route 400 (former)

Preceded by 399

Lists of highways 400

Succeeded by 401