State Route 55 (SR 55) is a state highway that runs south-to-north through portions of Terrell and Calhoun counties in southwestern Georgia. The route runs from its southern terminus at SR 37 and SR 62 in Leary to its northern terminus at US 82 and SR 520 in Dawson.

State Route 55 begins in Leary, Georgia at the intersection of State Route 37 and State Route 62. It travels north, through rural sections of Calhoun County. Shortly after intersecting State Route 234, the route continues north into Terrell County. The route then continues north to Dawson, where it meets its northern terminus at U.S. Route 82/State Route 520.

A largely rural route, State Route 55 sees an Average Annual Daily Traffic of less than 2,000 vehicles.

State Route 55 at one point continued north to Cusseta along what is now State Route 520, but was superseded, and thus replaced, upon the commissioning of State Route 520.