Theodore Dammann was a politician from the U.S. state of Wisconsin.
The son of a Lutheran pastor, he attended Concordia College, at the time located in Milwaukee, now known as Concordia University Wisconsin, located in Mequon, Wisconsin.
For his first four terms he was a Republican and served under governors Fred R. Zimmerman, Walter J. Kohler, Sr., Philip La Follette and Albert G. Schmedeman.
For his second two terms he was a Progressive and served once again under Governor Philip La Follette.
He resided in Milwaukee, Wisconsin at the time of his election.