Harry Conrad Gahn (April 26, 1880 – November 2, 1962) was a U.S. Representative from Ohio for one term from 1921 to 1923.

Born in Elmore, Ohio, Gahn attended the public schools.

He was graduated from the law department of the University of Michigan at Ann Arbor in 1904.

He was interred in the Harris-Elmore Union Cemetery, Elmore, Ottawa County, Ohio.

[1] This article incorporates public domain material from the Biographical Directory of the United States Congress