In music, Op. 29 stands for Opus number 29. Compositions that are assigned this number include:

Beethoven – String Quintet, Op. 29 Chopin – Impromptu No. 1 Enescu – Piano Quintet Finzi – Intimations of Immortality Hindemith – Klaviermusik mit Orchester Holst – St Paul's Suite Liebermann – Gargoyles Madetoja – Symphony No. 1 in F major (1916) Nielsen – Symphony No. 4 Prokofiev – Piano Sonata No. 4 Rachmaninoff – Isle of the Dead Ries – Clarinet Sonata Saint-Saëns – Piano Concerto No. 3 Schubert – String Quartet No. 13 Schumann – 3 Gedichte Scriabin – Symphony No. 2 Shostakovich – Lady Macbeth of the Mtsensk District Sibelius – , melodrama for narrator, mixed choir, and orchestra (1900) Strauss – Traum durch die Dämmerung Suk – A Summer's Tale Szymanowski – Métopes Tchaikovsky – Symphony No. 3 Waterhouse – Mouvements d'Harmonie