Mount Holly Springs is a borough in Cumberland County, Pennsylvania, United States.

Mount Holly Springs is located in south-central Cumberland County at 40°6′58″N 77°11′12″W / 40.11611°N 77.18667°W / 40.11611; -77.18667 (40.116063, -77.186751),[4] at the northern foot of the South Mountain range.

The borough limits extend south through the water gap to the Upper Mill area.

The Pennsylvania Guide, compiled by the Writers' Program of the Works Progress Administration, briefly described Mt.

Holly Springs in 1940, writing that it was:laid out in a gorge of South Mountain in 1815 and once a popular watering place.

Mineral springs still flow, but the pavilions where the water was dispensed are decaying.

Between 1770 and 1855 iron furnaces and forges here made use of extensive local ore deposits.