| State: | AR |
| Type: | AR |
| Route: | 171 |
| Map Custom: | yes |
| Length Mi1: | 1.19 |
| Length Ref1: | [1] |
| Direction A1: | South |
| Terminus A1: | near Gifford |
| Direction B1: | North |
| Terminus B1: | Wine Dot Road near Gifford |
| Length Mi2: | 11.67 |
| Direction A2: | South |
| Terminus A2: | near Malvern |
| Direction B2: | North |
| Terminus B2: | Lake Catherine State Park |
| Length Mi3: | 1.27 |
| Direction A3: | South |
| Terminus A3: | near Price |
| Direction B3: | North |
| Terminus B3: | End state maintenance at Tigre Mountain Road near Lonsdale |
| Counties: | Garland, Hot Spring |
| Previous Type: | AR |
| Previous Route: | 170 |
| Next Type: | AR |
| Next Route: | 172 |
Highway 171 (AR 171, Ark. 171, and Hwy. 171) is a designation for three state highways in Southwest Arkansas. One route of 1.2miles runs from US Highway 67 (US 67) to Wine Dot Road near an industrial facility. A second route of 12.9miles begins at Highway 84 in Malvern and runs east to Lake Catherine State Park. A third route of 4.91miles begins at US Highway 270 (US 270) and runs north, with state maintenance ending at Tigre Mountain Road. All routes are maintained by the Arkansas State Highway and Transportation Department (AHTD).
The route was first designated on the January 1939 state highway map between Highway 84 in Malvern and Lake Catherine State Park at the county line. It was extended east deeper into the park in 1952. The segment between US 270 and the county line was added in June 1973 pursuant to Act 9 of 1973 by the Arkansas General Assembly.[2] The act directed county judges and legislators to designate up to 12miles of county roads as state highways in each county.[3] The final segment was added for industrial access from US 67 to a new Willamette Industries particleboard plant on March 6, 1986.[4]