Theater Ulm is the municipal theater in the Baden-Württemberg city of Ulm in Germany. Founded in 1641, it is the oldest municipal theater in Germany. Today, it operates distinct ensembles for opera/operetta, acting, and ballet. Until 2006, it operated as Ulmer Theater. The current building, at Herbert-von-Karajan-Platz 1, was built from 1966 to 1969, based on plans by Fritz Schäfer. It was opened on 3 October 1969.