Bayezid Osman, also known as Osman Bayezid Osmanoğlu with a surname as required by the Republic of Turkey, or known by the Ottoman imperial name as Şehzade (Prince) Bayezid Osman Efendi (بایزید عثمان; 23 June 1924 – 6 January 2017), was the 44th Head of the Imperial House of Osman, which ruled the Ottoman Empire from 1299 to 1922.