Andalusia is a historic neighborhood and unincorporated community in Bensalem Township, Pennsylvania, United States.

Its boundaries are Woodhaven Road (Pennsylvania Route 63) to the northeast, the Delaware River to the east and south, and Poquessing Creek to the north and west.

The neighborhood takes its name from Andalusia, the estate of Philadelphia financier Nicholas Biddle (1786–1844), now preserved as a National Historic Landmark.

Andalusia is also home to many historic buildings, some dating back to the early nineteenth century, owned and inhabited by some of Philadelphia's wealthiest families.

The neighborhood's main thoroughfare, Bristol Pike (US Route 13, formerly King's Highway), reveals various homes and churches that have been preserved, while the most esteemed buildings, including Biddle's estate, the Pen Ryn mansion, and State in Schuylkill, are hidden along the banks of the Delaware.