Osman Bey may refer to:
Osman I, Ottoman Bey ( 1254–1323) Tanburi Büyük Osman Bey (1816–1885), Ottoman composer Osman Hamdi Bey (1842–1910), Ottoman statesman Qara Osman ( 1378–1435), Oghuz Turkic leader Topal Osman (1883–1923), Turkish militia leader Osman Bey ( 1737), Ottoman Bosnian commander Osman Adil Bey, mayor of Thessaloniki (1908) Osman Bey, name taken by English writer and army officer Frederick van Millingen while in Ottoman service Osman Bey (fictional character), the main protagonist of the Turkish series Kuruluş: Osman