Symphony No. 21 may refer to:
*
Symphony No. 21 (Brian) in E-flat by
Havergal Brian
Havergal Brian (born William Brian; 29 January 187628 November 1972) was an English composer. He is best known for having composed 32 symphonies (an unusually high total for a 20th-century composer), most of them late in his life. His best-know ...
, 1963
*
Symphony No. 21 (Haydn)
The Symphony No. 21 in A major, Hoboken I/21, was composed by Joseph Haydn around the year 1764. The symphony’s movements have unusual structures that make their form hard to identify. The parts that pertain to sonata form are often hard to reco ...
in A major (Hoboken I/21) by Joseph Haydn, c. 1764
*
Symphony No. 21 (Michael Haydn) in D major (Perger 42, Sherman 21, MH 272) by Michael Haydn, 1778
*
Symphony No. 21 (Mozart) in A major (K. 134) by Wolfgang Amadeus Mozart, 1772
*
Symphony No. 21 (Ovsianiko-Kulikovsky) in G minor, a hoax by Mikhail Goldstein, c. 1949
*
Symphony No. 21 (Weinberg) (Op. 152, ''Kaddish'') by Mieczysław Weinberg, 1991
{{disambig
021
021 is:
* in Brazil, the telephone area code for the city of Rio de Janeiro and surrounding cities (Greater Rio de Janeiro)
* in China, the telephone area code for the city of Shanghai.
* in Indonesia, the area code for the city of Jakarta and su ...