Peter Ostermayr (18 July 1882 – 7 May 1967) was a German film producer, screenwriter and film director. Ostermayr was a pioneer during the early years of German cinema, with his brothers Franz Osten and Ottmar Ostermayr. In 1907 they took over their father's photography business and turned into a film studio. After serving in the First World War he founded a company which later evolved into Bavaria Film, and acquired the Emelka Studios in Munich. While Bavaria went on to become a leading German production company, Ostermayr had left by the mid-1920s and worked at several other studios including the giant UFA.