| State: | AR |
| Type: | AR |
| Route: | 91 |
| Map: | Arkansas 91.png |
| Length Mi: | 31.91 |
| Length Round: | 2 |
| Length Ref: | [1] |
| Direction A: | South |
| Terminus A: | in Jonesboro |
| Junction: | in Jonesboro |
| Direction B: | North |
| Terminus B: | in Walnut Ridge |
| Previous Type: | AR |
| Previous Route: | 90 |
| Next Type: | AR |
| Next Route: | 92 |
Highway 91 (AR 91, Ark. 91, and Hwy. 91) is a north–south state highway in the Upper Arkansas Delta. The route of 31.91miles begins at US Highway 49 (US 49) and Highway 1 at Jonesboro and runs north to US 412B in Walnut Ridge. The route is maintained by the Arkansas Department of Transportation (ArDOT).
AR 91 begins in northwest Jonesboro at US 63 BUS. The route runs west in a concurrency with AR 18 over Interstate 555 (I-555) and US 63 as Dan Avenue. The concurrency continues west as Kings Highway until AR 18 turns south near Dryden. AR 91 meets AR 230 and AR 228 briefly in rural Lawrence County before again crossing US 63. The route continues north to cross I-57/US 67 before terminating at US 412B in Walnut Ridge.[2] [3]