Mehmed VI Vahideddin ( Meḥmed-i sâdis or Vaḥîdü'd-Dîn; or /; 14 January 1861 – 16 May 1926), also known as Şahbaba () among the Osmanoğlu family, was the last sultan of the Ottoman Empire and the penultimate Ottoman caliph, reigning from 4 July 1918 until 1 November 1922, when the Ottoman sultanate was abolished and replaced by the Republic of Turkey on 29 October 1923.
Mehmed VI Vahideddin ( Meḥmed-i sâdis or Vaḥîdü'd-Dîn; or /; 14 January 1861 – 16 May 1926) also known as Şahbaba () among the Osmanoğlu family was the last sultan of the Ottoman Empire and the penultimate Ottoman caliph reigning from 4 July 1918 until 1 November 1922 when the Ottoman sultanate was abolished and replaced by the Republic of Turkey on 29 October 1923