Piano Sonata in B-flat major may refer to:
Piano Sonata No. 11 (Beethoven) Piano Sonata No. 29 (Beethoven) Piano Sonata Hob. XVI/17 (Haydn) Piano Sonata Hob. XVI/18 (Haydn) Piano Sonata No. 3 (Mozart) Piano Sonata No. 13 (Mozart) Piano Sonata No. 17 (Mozart) Piano Sonata K. 498a (Mozart) Piano Sonata No. 7 (Prokofiev) Piano Sonata No. 8 (Prokofiev) Piano Sonata D. 960 (Schubert) Sonata for piano four-hands, D 617 (Schubert)