In music, Op. 39 stands for Opus number 39. Compositions that are assigned this number include:

Alkan – Comme le vent Alkan – En rythme molossique Alkan – Le festin d'Ésope Alkan – Scherzo diabolico Brahms – 16 Waltzes Britten – Albert Herring Busoni – Piano Concerto Chopin – Scherzo No. 3 Dvořák – Czech Suite Elgar – Pomp and Circumstance Marches Ginastera – Piano Concerto No. 2 Hindemith – Cardillac Margaret – Befreit Mendelssohn – Drei Motetten Myaskovsky – Symphony No. 16 Oswald – String Quartet No. 3 Prokofiev – Quintet Rachmaninoff – Études-Tableaux, Op. 39 Schumann – Liederkreis, Op. 39 Sibelius – Symphony No. 1 in E minor (1899, revised 1900)