Josef Antonín Štěpán or Joseph Anton Steffan (c. March 1726 – c. April 1797) was a Bohemian-Austrian classical era composer and harpsichordist.
Steffan was born in Kopidlno, near Hradec Králové, Bohemia in March 1726, the son of a schoolmaster and church organist. In 1741 he fled from the Prussian army to Vienna. He received his first musical lessons from his father but, in Vienna, he studied with Schilck and later became a student of
Georg Christoph Wagenseil. He became the piano teacher of Maria Carolina and
Marie Antoinette. In 1775, he contracted an eye disease which left him almost blind. He gave up his position at the court, but continued to compose. He died in Vienna in April 1797.
Steffan's compositional output includes sacred works and chamber music (especially piano music). In particular he wrote caprices, harpsichord sonatas and concertos. Specific works include:
