CIBC Theatre is a theater located at 18 West Monroe Street in the Loop area of downtown Chicago. It is operated by Broadway In Chicago, part of the Nederlander Organization. Opened in 1906 as the Majestic Theatre, it currently seats 1800 and for many years has presented Broadway shows. In its early years, the theater presented Vaudeville celebrity acts.
In the 1940s, the theater became part of the Shubert Organization and was known as the Sam Shubert Theatre. Since the 1990s, it has been owned by Nederlander, which refurbished and restored the building and sells naming rights; it has been named for LaSalle Bank, then Bank of America. The PrivateBank acquired the naming rights in December 2015, later becoming CIBC Bank USA, and in 2017, the theatre's name changed to reflect the new bank ownership.