The Kegelstatt Trio, K. 498, is a piano trio for clarinet, viola and piano in E-flat major by Wolfgang Amadeus Mozart. The composer entered it in his list as "Ein Terzett für klavier, Clarinett und Viola" (A trio for piano, clarinet and viola). Mozart wrote the trio on 10 sheets (19 pages) in Vienna and dated the manuscript on 5 August 1786.
