State Highway 39, abbreviated as SH-39, is a state highway in the U.S. state of Oklahoma. It is 68.4 miles (110.1 km) in length. It runs east–west through the central part of the state, beginning at unincorporated Tabler, east of Chickasha, and ending east of Konawa. Along the way, SH-39 serves the counties of Grady, McClain, Cleveland, Pottawatomie, and Seminole. It currently has no lettered spurs.
SH-39 was built in 1923 but not added to the state highway system until approximately 1936. Originally connecting Tabler to Purcell, SH-39 was extended to the east over the next five years, first to Asher and then to Konawa.
The highway begins at the concurrency of U.S. Highway 62 (US-62)/US-277/State Highway 9 (SH-9) near the unincorporated community of Tabler, east of Chickasha. The road begins traveling east from there, intersecting SH-76ten miles (16 km) later west of Dibble. From Dibble, it continues east, meeting the eastern terminus of SH-59 and intersecting SH-24 in the unincorporated town of Woody Chapel. It then continues east to Purcell.
In Purcell, SH-39 passes under Interstate 35, but does not have a junction with it. The highway soon encounters US-77/SH-74 just east of the interstate. Here, it turns northward and begins an overlap with the two highways through Purcell. SH-74 splits off after a few blocks while SH-39 and US-77 turn eastward and cross over the Canadian River on the James C. Nance Memorial Bridge. After crossing the river, the highways arrive in the town of Lexington and US-77 splits off to the northeast.
SH-39 continues eastward, serving the Lexington prison and overlapping for less than a mile with SH-102. In the town of Asher, the highway intersects SH-3W and SH-59 again. Eleven miles (18 km) later, the highway meets SH-9A in Konawa. The highway ends four miles (6.4 km) east of Konawa at US-377/SH-3E/SH-99. The mainline of the highway becomes SH-56.