Joseph Scofield Ammerman (July 14, 1924 – October 14, 1993) was an American lawyer and politician who served as a Democratic member of the U.S. House of Representatives from Pennsylvania for one term from 1977 to 1979.

[2] He graduated from Dickinson College in Carlisle, Pennsylvania in 1948 and received his J.D.

[2] In 1953, he was elected to the position of district attorney of Clearfield County.

[2] In 1976, he was elected as a Democrat to the 95th Congress, but was an unsuccessful candidate for reelection in 1978.

[2] After his term in the House, he served as judge, court of common pleas in Clearfield County, Pennsylvania from 1986 to 1993.