List of highways numbered 721

The following highways are numbered 721:

Costa Rica

 * CR RNT 721.svg National Route 721

United States

 * Florida 721.svg Florida State Road 721 (former)
 * Georgia State Route 721 (former)
 * Nevada State Route 721 (former)
 * New Jersey:
 * Camden County 721.svg County Route 721 (Camden County, New Jersey)
 * CR 721 jct.svg County Route 721 (Cumberland County, New Jersey)
 * Hudson County 721.svg County Route 721 (Hudson County, New Jersey)
 * OH-721.svg Ohio State Route 721
 * Ellipse sign 721.svg Puerto Rico Highway 721
 * Virginia State Route 721 (1930-1933) (former)