In music, Op. 98 stands for Opus number 98. Compositions that are assigned this number include:
Beethoven – An die ferne Geliebte Brahms – Symphony No. 4 Dvořák – American Suite Milhaud – L'abandon d'Ariane Schubert – Wiegenlied, D 498 Schumann – Songs from Wilhelm Meister (Lieder und Gesänge aus 'Wilhelm Meister'), Op. 98a; Requiem for Mignon, Op. 98b Sibelius – and , each for small orchestra (1921–1922)