Fredericksburg is an unincorporated community and census-designated place (CDP) in Bethel Township, Lebanon County, Pennsylvania, United States.

Fredericksburg was originally called "Stumptown" after a disreputable settler named Frederick Stump, who founded the town in 1755, and reportedly massacred an encampment of ten inebriated Indians one winter and sent their bodies down the Susquehanna.

[5] Fredericksburg was the birthplace of James Lick, a pianomaker who moved to San Francisco and invested in real estate just before the Gold Rush.

Lick had become the wealthiest man in California by the time of his death, leaving his large fortune to philanthropic causes.

[6] Fredericksburg is located in northeastern Lebanon County, in the west-central part of Bethel Township.

Pennsylvania Route 343 leads south from Fredericksburg 8 miles (13 km) to Lebanon, the county seat.

According to the United States Census Bureau, the Fredericksburg CDP has a total area of 1.9 square miles (5.0 km2), all land.