Peter Joseph Wagner (August 14, 1795 – September 13, 1884) was a U.S. Representative from New York.
He was admitted to the bar in September 1819 and commenced practice at Fort Plain, New York.
He served as chairman of the Committee on Expenditures in the Department of War (Twenty-sixth Congress).
He continued the practice of law at Fort Plain until May 1873, when he retired.
This article incorporates public domain material from the Biographical Directory of the United States Congress