Jörg Wolfgang Demus (2 December 1928 – 16 April 2019) was an Austrian classical pianist who appeared internationally and made many recordings.

He played with singers such as Elisabeth Schwarzkopf and Dietrich Fischer-Dieskau, as a piano duo with Paul Badura-Skoda, and with string players such as Josef Suk and Antonio Janigro.

[5] He made his debut as a pianist when he was still a student: at the age of 15,[6] he played in the Brahms-Saal of the prestigious Gesellschaft der Musikfreunde[1][7] Bach's Das wohltemperierte Klavier.

In 1953 he further studied interpretation with Wilhelm Kempff, Arturo Benedetti Michelangeli, and Edwin Fischer, and attended master classes with Walter Gieseking.

[9] Demus was active as a lied accompanist and a chamber music partner, appearing with singers such as Elisabeth Schwarzkopf, Dietrich Fischer-Dieskau,[5] Elly Ameling and Peter Schreier, and with string players such as Josef Suk and Antonio Janigro.

[5] Demus collaborated with Paul Badura-Skoda on the concert platform and on a book concerning the interpretation of Beethoven's piano sonatas.

[5] Among the many recordings by Demus are sets of the complete piano works by both Robert Schumann and Claude Debussy.

[14] He recorded several of his own compositions with cellist Maria Kliegel, including Poetische Sonate (Poetic Sonata) in G minor, Op.