Bryden Thomson (16 July 1928 – 14 November 1991) was a Scottish conductor remembered especially for his championship of British and Scandinavian composers. His recordings include influential surveys of the orchestral music of Hamilton Harty and Arnold Bax. He was principal conductor of several British orchestras, including the Ulster Orchestra, which flourished under his tenure.
Bryden ("Jack") Thomson was born in Ayr and grew up playing the violin and cello. Soon after entering the Royal Scottish Academy of Music in Glasgow on a scholarship at the age of 15, he was called up to serve in the Highland Light Infantry, where he played the piano in the regimental band and taught himself the clarinet. After the war, he returned to his studies at the Royal Scottish Academy of Music. In 1954 he moved to Germany to study conducting, first with Hans Schmidt-Isserstedt at the newly founded Hochschule für Musik in Hamburg, and then with Igor Markevitch at the Mozarteum University of Salzburg.
Following a post as assistant conductor of the BBC Scottish Orchestra (1958–1962), Bryden Thomson held posts as principal conductor of several British orchestras, including the BBC Northern Symphony Orchestra (1968–1973), the BBC Welsh Symphony Orchestra (1978–1982) and the Ulster Orchestra (1977–1985). Between 1984 and 1987 he was principal conductor of the Irish RTÉ Symphony Orchestra. He was also briefly chief conductor of the Royal Scottish National Orchestra (1988–1990), being only the second Scotsman to hold that post.