| State: | AR |
| Type: | AR |
| Route: | 303 |
| Map: | Arkansas 303.png |
| Formed: | April 24, 1963[1] |
| Length Mi1: | 1.763 |
| Length Ref1: | [2] |
| Direction A1: | South |
| Direction B1: | North |
| Terminus A1: | CR 6245 |
| Terminus B1: | east of Wesley |
| Length Mi2: | 8.567 |
| Direction A2: | South |
| Direction B2: | North |
| Terminus A2: | at Mayfield |
| Length Mi3: | 2.27 |
| Direction A3: | South |
| Direction B3: | North |
| Terminus A3: | in Hobbs State Park – Conservation Area |
| Counties: | Benton, Madison, Washington |
| Previous Type: | AR |
| Previous Route: | 302 |
| Next Type: | AR |
| Next Route: | 304 |
Highway 303 (AR 303, Ark. 303, and Hwy. 303) is a designation for three north–south state highways in Northwest Arkansas. Each connects sparsely populated rural areas to east–west corridors.
Highway 303 begins at Lollar's Creek Road (Madison CR 192) and runs northwest to terminate at Highway 74 east of Wesley.[3]
Highway 303 begins at Highway 45 at Mayfield and runs north through unincorporated Washington County to meet US Route 412 at Spring Valley near the historic Spring Valley School. The two routes participate in a 1miles concurrency east until Highway 303 turns north from US 412 near the Madison County line. The route then runs north towards War Eagle and becomes Benton CR 98 which eventually gives access to Highway 12 near Beaver Lake.[4]
Highway 303 begins at Highway 12, angling northeast before terminating at Rocky Branch Road (Benton CR 99) near the Rocky Branch School and Beaver Lake.[5]
Highway 303 was added to the state highway system as part of a large transfer of county roads to the state system that took place on April 24, 1963. Initially only the portion from Mayfield to the Benton County line was transferred to state maintenance.
Mile markers reset at concurrencies.