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