String Quartet in D major

String Quartet in D major may refer to:
 * No. 4 of the String Quartets, Op. 20 (Haydn)
 * No. 6 of the String Quartets, Op. 33 (Haydn)
 * No. 6 of the String Quartets, Op. 50 (Haydn)
 * No. 5 of the String Quartets, Op. 64 (Haydn)
 * No. 5 of the String Quartets, Op. 76 (Haydn)
 * String Quartet No. 2 (Mozart)
 * String Quartet No. 20 (Mozart)
 * String Quartet No. 21 (Mozart)
 * String Quartet No. 3 (Beethoven)
 * String Quartet No. 6 (Schubert)
 * String Quartet No. 7 (Schubert)
 * String Quartet No. 3 (Mendelssohn)
 * String Quartet (Franck)
 * String Quartet No. 2 (Borodin)
 * String Quartet No. 1 (Tchaikovsky)
 * String Quartet No. 3 (Dvořák)
 * String Quartet No. 4 (Piston)
 * String Quartet No. 4 (Shostakovich)
 * String Quartet in D major (Britten) (1931)
 * String Quartet No. 1 (Britten)