Neshaminy High School is a public high school in Middletown Township in Bucks County, Pennsylvania, United States. It is the only high school in the Neshaminy School District, serving students in Middletown Township, Lower Southampton Township, Hulmeville, Langhorne, Langhorne Manor, and Penndel. In 2022, the school enrolled 2,677 students in grades 9 through 12. "U.S. News & World Report" ranked the school 117 out of 718 Pennsylvania high schools in 2022.

Middletown Township is a township in Bucks County, Pennsylvania, United States. The population was 46,040 at the 2020 census. Many sections of Levittown are located in the southern end of the township. The municipality surrounds the boroughs of Langhorne, Langhorne Manor, Penndel and Hulmeville; much of the township beyond Levittown uses Langhorne as its mailing address. The township is located within the Delaware Valley, also known as the Philadelphia metropolitan area.