Mehmed Orhan  (11 July 1909 – 5/12 March 1994) was the 42nd head of the Ottoman dynasty. He succeeded as head of the dynasty on 9 December 1983, after the death of Ali Vâsib. If reigning, he would be Sultan Orhan VII.
He was born at Serencebey Palace or at Kisil Toprak, Turkey. He was the son of HIH Prince Şehzade Mehmed Abdul Kadir Efendi, Captain of the Ottoman Army, by second wife HH Mihriban Hanımefendi. The marriage was not recognised by the Imperial House. On his 13 birthday he was ceremoniously circumcised in the Dolmabahce Palace. He died in Nice and was buried there.
Marriages and issueEdit
In January 1933, Prince Mehmed Orhan married the Egyptian Princess HH Nafiye Yeghen Hanım Efendi. This marriage was annulled in 1947. In Paris in 1944, he got a Morganatic marriage with the French American Marguerite Irma Fournier. He had a daughter with his first wife and a stepson with his second wife.
- HIH Princess Fatma Necla Sultan (born in Cairo, 14 September 1933 - 2010 at Zurich)
- Sultanzade Erol Mangos, (born 1954) by Ali Zeki Mangos
- Sultanzade Osman Cem Germann, (born 1963) by Randoph Germann
- Mehmed Selim Orhan, (born in Paris, 3. October 1943) deprived since birth of title HIH Şehzade
Eligibility note: A male person born to parents who are not married to each other at the time of birth is not included in the line of succession and passes no rights to their descendants.
Mehmed Selim Orhan de Turquie was born before his parents married in 1944. At the time of his birth, his stepfather was not divorced by his first wife.
Marcos Alberto Alcalai- born in Brazil in 1962 Mehemed Orhan's only biological child born of a relationship with a divorced woman, legitimized in Turkey in 1992 was not deprived of the title of HIH Şehzade
- (Ottoman Turkish:محمد اورخان)
- Genealogy of Mehmed Orhan
- Frebault, Henri. "Mehmed Orhan de Turquie". GeneaNet. Retrieved 25 January 2014.
- The History Files: The Ottoman Empire