Piano Sonata in C minor may refer to:

Piano Sonata No. 5 (Beethoven) Piano Sonata No. 8 (Beethoven) Piano Sonata No. 32 (Beethoven) Piano Sonata No. 1 (Chopin) Piano Sonata Hob. XVI/20 (Haydn) Piano Sonata No. 14 (Mozart) Piano Sonata No. 4 (Prokofiev) Piano Sonata D. 958 (Schubert)