List of highways numbered 170

The following highways are numbered 170:

Canada

 * NB 170.svg New Brunswick Route 170
 * PEI_Highway_170.svg Prince Edward Island Route 170
 * qc170.svg Quebec Route 170

Costa Rica

 * CR RNS 170.svg National Route 170

Japan

 * Japanese National Route Sign 0170.svg Japan National Route 170

United States

 * I-170 (MO).svg Interstate 170 (Missouri)
 * I-170.svg Interstate 170 (Maryland) (former)
 * US 170 (1926).svg U.S. Route 170 (former)
 * Alabama 170.svg Alabama State Route 170
 * Arizona 170.svg Arizona State Route 170 (former)
 * Arkansas 170.svg Arkansas Highway 170
 * California 170.svg California State Route 170
 * Colorado 170.svg Colorado State Highway 170
 * Georgia 170.svg Georgia State Route 170 (former)
 * Illinois 170.svg Illinois Route 170
 * K-170.svg K-170 (Kansas highway)
 * Elongated circle 170.svg Kentucky Route 170
 * Louisiana 170.svg Louisiana Highway 170
 * MA Route 170.svg Maine State Route 170
 * MD Route 170.svg Maryland Route 170
 * M-170.svg M-170 (Michigan highway) (former)
 * Nevada 170.svg Nevada State Route 170
 * Ellipse sign 170.svg New Jersey Route 170 (former)
 * New Mexico 170.svg New Mexico State Road 170
 * NY-170.svg New York State Route 170
 * NY-170A.svg New York State Route 170A
 * OH-170.svg Ohio State Route 170
 * PA-170.svg Pennsylvania Route 170
 * South Carolina 170.svg South Carolina Highway 170
 * Secondary Tennessee 170.svg Tennessee State Route 170
 * Texas 170.svg Texas State Highway 170
 * Texas Loop 170.svg Texas State Highway Loop 170
 * Texas FM 170.svg Farm to Market Road 170
 * Utah SR 170.svg Utah State Route 170 (former)
 * Virginia 170.svg Virginia State Route 170
 * WA-170.svg Washington State Route 170
 * WIS 170.svg Wisconsin Highway 170
 * WY-170.svg Wyoming Highway 170
 * Territories:
 * Ellipse sign 170.svg Puerto Rico Highway 170