The Hanover State Symphony Orchestra (German: Niedersächsisches Staatsorchester Hannover) is based in Hanover, the state capital of Lower Saxony, Germany.
It serves as the orchestra of the Hanover State Opera (Staatsoper Hannover), and primarily performs its symphony concerts at Hanover Opera House (Opernhaus Hannover).
Since 1 January 1970, the orchestra has been part of Hanover State Theatre of Lower Saxony (Niedersächsisches Staatstheater Hannover).
The longest-serving general music director (Generalmusikdirektor) of the orchestra was George Alexander Albrecht from 1965 to 1993.
In February 2020, the orchestra announced the appointment of Zilias as its next general music director, effective with the 2020–2021 season.