In music, Op. 87 stands for Opus number 87. Compositions that are assigned this number include:

Brahms – Piano Trio No. 2 Dvořák – Piano Quartet No. 2 Elgar – The Severn Suite Fauré – Le Plus doux chemin Mendelssohn – String Quintet No. 2 Prokofiev – Cinderella Rautavaara – String Quartet No. 4 Ries – Flute Sonata No. 4 Schumann – Der Handschuh Shostakovich – 24 Preludes and Fugues Sibelius – Two Humoresques, concertante works for violin and orchestra (1917, revised 1940)