Heads of the Osmanoğlu family

Abdulmejid II (Ottoman Turkish: عبد المجید ثانی‎, `Abdü’l-Mecîd-i-sânî, Turkish: Halife Abdülmecit Efendi, 29 May 1868 – 23 August 1944) was the last Caliph of the Ottoman Dynasty, nominally the 37th Head of the Ottoman Imperial House from 1922 to 1924.

Prince Şehzade Dündar Aliosman Efendi (also named Dündar Osmanoğlu; born 30 December 1930 in Damascus, Syria) is the heir of Bayezid Osman and future 45th Head of the Imperial House of Osman, and as such future pretender to the former throne of Turkey and the caliphate of Sunni Islam. He is a descendant of the Sultan Abdul Hamid II.

Bayezid Osman, also known as Osman Bayazid Osmanoğlu with a surname as required by the Turkish Republic, or known by the Ottoman imperial name as Prince Şehzade Bayezid Efendi (Ottoman Turkish: بایزید عثمان‎; born 23 June 1924), is the 44th Head of the Imperial House of Osman, which ruled the Ottoman Empire from 1281 to 1922. The monarchy was abolished in 1922, with the modern Republic of Turkey replacing it. He is the second son of Sultan Abdülmecid I's grandson Ibrahim Tevfik (24 September 1874 – 31 December 1931) by his fourth wife Hadice Sadiye Hanim. If the Ottoman monarchy were restored, he would be Grand Sultan Bayezid III. He is a member of one of the younger branches of the House of Osman.

Mehmed VI Vahideddin (Ottoman Turkish: محمد سادس‎ Meḥmed-i sâdis, وحيد الدين‎ Vahideddin, Turkish: Vahideddin or Altıncı Mehmet), also known as Şahbaba (meaning "Emperor-father") among Osmanoğlu family, (14 January 1861 – 16 May 1926) was the 36th and last Sultan of the Ottoman Empire, reigning from 4 July 1918 until 1 November, 1922 when the Ottoman Empire was dissolved, after World War I, and was replaced by the Republic of Turkey, on 29 October 1923. The brother of Mehmed V, he became heir to the throne in 1916 after the suicide of Abdülaziz's son, Şehzade Yusuf Izzeddin, as the eldest male member of the House of Osman. He acceded to the throne after the death of Mehmed V. He was girded with the Sword of Osman on 4 July 1918, as the thirty-sixth padishah. His father was Sultan Abdulmejid I and his mother was Gülüstü Hanım (1830 – 1865.) She was an ethnic Abkhazian, daughter of Prince Tahir Bey Çaçba and his wife Afişe Lakerba, who was originally named Fatma Çaçba. Mehmed stepped down when the Ottoman Sultanate was abolished in 1922, and the secular Republic of Turkey was created, with Mustafa Kemal Atatürk as the first president.

Ahmed Nihad (Ottoman Turkish: احمد نيهاد‎; 5 July 1883 – 4 June 1954), 38th Head of the Imperial House of Osman from 1944 to 1954, was the 38th and second post-imperial head of the Imperial House of Osman.

Mehmed Orhan (Ottoman Turkish: محمد اور خان‎ 11 July 1909 – 12 March 1994) was the 42nd head of the Ottoman dynasty from 1983 to 1994. He succeeded as head of the Ottoman dynasty on 9 December 1983, following the death of Ali Vâsib. If reigning, he would have been styled as Sultan Orhan II.

Mehmed Abdulaziz or Abdulaziz Mehmed (26 September 1901 – 19 January 1977) was the 40th head of the Ottoman dynasty from 1973 to 1977. If reigning, he would have been Sultan Abdulaziz II.

Osman Fuad (Çırağan Palace, Ortaköy, February 24, 1895 – 19 May 1973), was the 39th Head of the Imperial House of Osman from 1954 to 1973.

Ertuğrul Osman (Ottoman Turkish: ارطغرل عثمان‎), also known as Osman Ertuğrul Osmanoğlu with a surname as required by the Turkish Republic (18 August 1912 – 23 September 2009), was an Imperial Prince (or Shahzada) of the Ottoman Empire and the 43rd Head of the Imperial House of Osman from 1994 until his death. Had the Ottoman Empire not been dissolved and succeeded by the Republic of Turkey, he would have become sultan and caliph as Osman V. He was also known as Ertugrul II in reference to Ertuğrul, the father of Osman I.

Harun Osman Osmanoğlu (born 22 January 1932, Damascus, Syria) is the 46th Head of the House of Osman, which ruled the Ottoman Empire from 1299 until the abolition of the Sultanate in 1922. He is known by the Ottoman imperial name as Şehzade (Prince) Harun Osman Osmanoğlu Effendi.