The City of Birmingham Symphony Orchestra (CBSO) is a British orchestra based in Birmingham, England. It is the resident orchestra at Symphony Hall, Birmingham in Birmingham, which has been its principal performance venue since 1991. Its administrative and rehearsal base is at the nearby CBSO Centre, where it also presents chamber concerts by members of the orchestra and guest performers.

Each year, the CBSO performs more than 150 concerts in Birmingham, the UK and around the world. With a far-reaching community programme and a family of choruses and youth ensembles, it is involved in every aspect of music-making in the Midlands. At its centre is a team of 90 professional musicians, and over a 100-year tradition of making music, in the heart of Birmingham. The CBSO has four choirs – the CBSO Chorus, Youth Chorus, Children's Chorus and SO Vocal (our un-auditioned community choir). The CBSO Choruses are directed by Simon Halsey, Chorus Director, who celebrated his 40 year anniversary with the CBSO in the 2023 season. The Children's and Youth Chorus are led by Julian Wilkins, Associate Chorus Director. SO Vocal is conducted by Lucy Hollins.

The current chief conductor and artistic adviser of the CBSO is Kazuki Yamada, effective April 2023.