Dry Run is an unincorporated community in Fannett Township in Franklin County, Pennsylvania, United States.

Dry Run is located at the intersection of Pennsylvania Route 75 and Back Road.

[2] Dry Run was originally called Morrowstown, and under the latter name was platted in 1838, and named after the maiden name of the founder's wife.

[3] The present name is derived from nearby Dry Run creek.

[3] A post office called Dry Run has been in operation since 1825.