List of highways numbered 303

The following highways are numbered 303:

Canada

 * NB 303.svg New Brunswick Route 303
 * Nova Scotia Route 303.svg Nova Scotia Route 303
 * PEI_Highway_303.svg Prince Edward Island Route 303
 * Qc303.svg Quebec Route 303
 * Saskatchewan Highway 303 (jct).svg Saskatchewan Highway 303

China

 * Kokudou 303(China).svg China National Highway 303

Costa Rica

 * CR RNT 303.svg National Route 303

India

 * NH303-IN.svg National Highway 303 (India)

Japan

 * Japanese National Route Sign 0303.svg Japan National Route 303

Philippines

 * N303 (Philippines).svg N303 highway (Philippines)

United Kingdom

 * UK road A303.svg A303 road (Basingstoke-Honiton)

United States

 * Arizona 303.svg Arizona State Route 303
 * Arkansas 303.svg Arkansas Highway 303
 * Georgia 303.svg Georgia State Route 303
 * Indiana 303.svg Indiana State Road 303
 * Elongated circle 303.svg Kentucky Route 303
 * Louisiana 303.svg Louisiana Highway 303
 * MD Route 303.svg Maryland Route 303
 * MN-303 (1948).svg Minnesota State Highway 303 (former)
 * Ellipse sign 303.svg New Jersey Route 303 (never built)
 * New York:
 * NY-303.svg New York State Route 303
 * County Route 303 (Albany County, New York)
 * Erie County 303 NY.svg County Route 303 (Erie County, New York)
 * County Route 303 (Westchester County, New York)
 * NC 303.svg North Carolina Highway 303 (former)
 * OH-303.svg Ohio State Route 303
 * PA-303.svg Pennsylvania Route 303 (former)
 * South Carolina 303.svg South Carolina Highway 303
 * Secondary Tennessee 303.svg Tennessee State Route 303
 * Texas:
 * Texas 303.svg Texas State Highway 303 (former)
 * Texas Spur 303.svg Texas State Highway Spur 303
 * Texas FM 303.svg Farm to Market Road 303
 * Texas FM 303.svg Urban Road 303 (signed as Farm to Market Road 303)
 * Utah SR 303.svg Utah State Route 303
 * Virginia 303.svg Virginia State Route 303
 * WA-303.svg Washington State Route 303

Other areas:
 * Ellipse sign 303.svg Puerto Rico Highway 303
 * Ellipse sign 303.svg U.S. Virgin Islands Highway 303