August Wenzinger (1905–1996) was a prominent cellist, viol player, conductor, teacher, and music scholar from Basel, Switzerland.
He was a pioneer of historically informed performance, both as a master of the viola da gamba and as a conductor of Baroque orchestral music and operas.
Wenzinger served as first cellist in the Bremen City Orchestra (1929–1934) and the Basel Allgemeine Musikgesellschaft (1936–1970).
Wenzinger moved to Basel the same year to accept an appointment to teach cello and viola da gamba at the newly founded Schola Cantorum Basiliensis.
He taught many acclaimed violists, including Jordi Savall, who succeeded him in 1974 as professor of viola da gamba, and Hannelore Mueller who succeeded him as professor of viola da gamba and baroque cello, at the Schola Cantorum Basiliensis.