| State: | OK |
| Type: | SH |
| Route: | 28 |
| Map: | Ok-28 path.png |
| Maint: | ODOT |
| Length Mi: | 68.4 |
| Direction A: | West |
| Direction B: | East |
| Terminus A: | south of Delaware |
| Junction: | |
| Terminus B: | west of Jay |
| Previous Type: | SH |
| Previous Route: | 27 |
| Next Type: | SH |
| Next Route: | 29 |
State Highway 28 (abbreviated SH-28) is a state highway in Oklahoma. It runs 68.4miles in an irregular west-to-east pattern through Nowata, Rogers, Mayes and Delaware counties.
There is one letter-suffixed spur highway branching from SH-28, SH-28A.
SH-28 begins at US-169 just south of Delaware. From there it travels 12miles east-to-south, passing the community of Childers, to a junction with US-60.
Crossing US-60, SH-28 runs six miles (10 km) due south to New Alluwe, then eight miles (13 km) south and east to Chelsea, where it intersects SH-66.
From Chelsea, it is six miles (10 km) straight south to the junction with SH-28A, where SH-28 turns due east, intersects with I-44 after four miles (6 km), and five miles (8 km) farther crosses US-69 at Adair.
Upon leaving Adair, SH-28 runs mainly east, eight miles (13 km) to Pensacola, then follows the arc of the Neosho River to the SH-82 junction outside of Langley. SH-28 crosses SH-82, then passes through Langley before crossing the Neosho River over Pensacola Dam into the town of Disney.
SH-28 then travels east to south 12miles to its terminus at SH-20, five miles (8 km) west of Jay.
SH-28A is SH-28's only spur, lying entirely in Rogers County. It runs 4.56miles west-to-east connecting SH-66 in Foyil with SH-28.