Montgomery is a borough in Lycoming County, Pennsylvania, United States. The population was 1,570 at the 2020 census. It is part of the Williamsport, Pennsylvania Metropolitan Statistical Area.

Montgomery was incorporated as a borough by the Court of Quarter Sessions of the Peace of Lycoming County, Pennsylvania on March 21, 1887 from share of Clinton Township. The records of the settlement of Montgomery begins in 1783 with John Lawson acknowledged a homestead there. Nicholas Shaffer built a gristmill in Montgomery in 1795. A sawmill and a wool carding mill were extra early industries found upon Black Hole Creek which flows through Montgomery.

P. M. Barber opened a distillery in 1859 and highly developed a planing mill in 1869 upon the site of the distillery which maintained sustained success. Barber later than his partners, A.B. Henderson, Jesse Rank, and Nathan Fowler laid out a town roughly their mill in 1870. The town was other expanded by the ability of Montgomery Machine Shops which started in 1873, under the meting out of Levi Houston, and built woodworking machinery sold to clients throughout the United States, Canada and Australia.

Montgomery was back known as Black Hole for the creek that flows through it and the say office customary in 1836 bearing that name. It was in addition to known as Clinton Mills, again named for the herald office. The name Montgomery stems from substitute name for the similar post office, Montgomery Station.