State Route 171 is a highway that runs north-to-south through portions of Warren, Glascock, Jefferson, Johnson, Emanuel, and Treutlen counties in east-central Georgia. The route runs from its northern terminus at US 278 and SR 12 in Warrenton to its southern terminus at Interstate 16/SR 404 northeast of Soperton.

The route runs south from Warrenton to Louisville as SR 171 for 36 miles (58 km). Just west of Louisville, it joins US 211 and SR 24, and is co-signed with both highways for 2.8 miles (4.5 km), running west. The route then turns sharply south again and is co-signed with just US 211 for 6.9 miles (11.1 km) into Bartow. From Bartow, Route 171 is co-signed with US 319 and SR 78, as well as US 211, for 3.6 miles (5.8 km), before US 211 and SR 171 split off for 29.1 miles (46.8 km) to continue south to its southern terminus.