State Route 31 (SR 31) is a 166.9-mile-long (268.6 km) state highway that travels south-to-north through portions of Lowndes, Lanier, Clinch, Atkinson, Coffee, Telfair, Wheeler, Dodge, Laurens, and Johnson counties in the south-central part of the U.S. state of Georgia. The highway connects the Florida state line, south of Clyattville with Wrightsville, via Valdosta, Douglas, and Dublin.
SR 31 formerly had a segment from Homerville to Pearson, but it was later decommissioned. The highway was then incrementally extended in both directions from its resulting Pearson–Douglas segment to its current path.