List of highways numbered 181

The following highways are numbered 181:

Canada

 * Prince Edward Island Route 181

Chile

 * Route 181-CH in Araucanía Region

India

 * NH181-IN.svg National Highway 181 (India)

Ireland

 * R181 Regional Route Shield Ireland.png R181 road (Ireland)

Japan

 * Japanese National Route Sign 0181.svg Japan National Route 181

United Kingdom

 * UK-Motorway-M181.svg M181 motorway (East Butterwick-Scunthorpe)

United States

 * I-181.svg Interstate 181 (former)
 * US 181.svg U.S. Route 181
 * Alabama 181.svg Alabama State Route 181
 * Arizona 181.svg Arizona State Route 181
 * Arkansas 181.svg Arkansas Highway 181
 * California 181.svg California State Route 181
 * Connecticut Highway 181.svg Connecticut Route 181
 * Florida 181.svg Florida State Road 181 (former)
 * Georgia 181.svg Georgia State Route 181 (former)
 * Georgia 181.svg Georgia State Route 181
 * Illinois 181.svg Illinois Route 181 (former)
 * Iowa 181.svg Iowa Highway 181 (former)
 * K-181.svg K-181 (Kansas highway)
 * Elongated circle 181.svg Kentucky Route 181
 * Louisiana 181.svg Louisiana Highway 181
 * MA Route 181.svg Maine State Route 181
 * MD Route 181.svg Maryland Route 181
 * MA Route 181.svg Massachusetts Route 181
 * M-181.svg M-181 (Michigan highway) (former)
 * MO-181.svg Missouri Route 181
 * Ellipse sign 181.svg New Jersey Route 181
 * New Mexico 181.svg New Mexico State Road 181
 * NY-181.svg New York State Route 181 (former)
 * NC 181.svg North Carolina Highway 181
 * OH-181.svg Ohio State Route 181
 * PA-181.svg Pennsylvania Route 181
 * South Carolina 181.svg South Carolina Highway 181
 * Tennessee 181.svg Tennessee State Route 181
 * Utah SR 181.svg Utah State Route 181 (former)
 * Texas 181.svg Texas State Highway 181 (former)
 * Texas Loop 181.svg Texas State Highway Loop 181
 * Texas FM 181.svg Farm to Market Road 181 (Texas)
 * Virginia 181.svg Virginia State Route 181
 * WA-181.svg Washington State Route 181
 * WIS 181.svg Wisconsin Highway 181

Territories:
 * PR urban primary 181.svg Puerto Rico Highway 181