The St. Petersburg Union of Composers, (Soyuz Kompositorov- Russian: Союз композиторов) is a professional and creative musical association with its headquarters at the former mansion of the Princess Vera F. Gagarina at 45 Bolshaya Morskaya Street, St Petersburg, Russia.
Amongst its members in its first decade of existence were composers including B.V. Asafyev, V.M.
[1] In 2003 the Petersburg Department of the Union of Composers had more than 210 members.
[2] In the 1930s, the Leningrad Department of the Union of Composers was located at 2 Rossi Street.
It moved in 1948 to its present location at 45 Bolshaya Morskaya Street.