Benjamin or Ben Pierce may refer to:
- Benjamin Pierce (governor) (1757–1839), governor of New Hampshire in the 1820s, father of U.S. President Franklin Pierce
- Benjamin Pierce (1841–1853), the last surviving son of U.S. President Franklin Pierce; died in a train accident just before his father's inauguration
- Benjamin C. Pierce (born 1963), American professor of computer science
- Benjamin Kendrick Pierce (1790–1850), U.S. Army officer in the Seminole Wars and brother of U.S. President Franklin Pierce, namesake of Fort Pierce, Florida
- Ben J. Pierce (born 1999), American YouTuber, singer-songwriter, and actor