Piano Sonata in C major may refer to:
Piano Sonata No. 1 (Brahms) Piano Sonata No. 3 (Beethoven) Piano Sonata No. 21 (Beethoven) Piano Sonata, WoO. 51 (Beethoven) Piano Sonata Hob. XVI/15 (Haydn) Piano Sonata Hob. XVI/50 (Haydn) Piano Sonata No. 1 (Mozart) Piano Sonata No. 7 (Mozart) Piano Sonata No. 10 (Mozart) Piano Sonata No. 16 (Mozart) Sonata in C major for piano four-hands, K. 521 (Mozart) Piano Sonata in C major, D 279 (Schubert) Piano Sonata in C major, D 613 (Schubert) Sonata in C major for piano four-hands, D 812 (Schubert) Piano Sonata in C major, D 840 (Schubert) Piano Sonata No. 5 (Prokofiev) Piano Sonata No. 9 (Prokofiev)