State Route 158 (SR 158) is part of Maine's system of numbered state highways, located entirely within the town of Sherman in Aroostook County.

From there, the route heads through the town as Main Street until an intersection with Golden Ridge Road within the community of Sherman Mills.

From this intersection, SR 158 continues Woodbridge Corner Road to its eastern terminus at US 2.

SR 158, as designated in 1925, was a much longer route than it is today, stretching from its current eastern (then southern) terminus in Sherman all the way to Fort Kent.

In the early 1930s, SR 11 was given its modern routing to Fort Kent, absorbing nearly all of SR 158 and leaving the short connector route in Sherman which exists today.