Osman I or Osman Ghazi (Ottoman Turkish: عثمان غازى, romanized: ʿOsmān Ġāzī; Turkish: I. Osman or Osman Gazi; died 1323/4), sometimes transliterated archaically as Othman, was the founder of the Ottoman Empire (first known as the Ottoman Beylik or Emirate). While initially a small Turkoman principality during Osman's lifetime, his beylik transformed into a world empire in the centuries after his death. It existed until shortly after the end of World War I.
|Uch Bey of the Sultanate of Rum|
|Reign||c. 1280 – c. 1299|
|Sultan of the Ottoman Empire|
|Reign||c. 1299 – 1323/4|
|Died||1323/4 (age 68–70)|
Bursa, Ottoman Beylik
Rabia Bala Hatun
- Kafadar, Cemal (1995). Between Two Worlds: The Construction of the Ottoman State. p. 16.
By the time of Osman's death (1323 or 1324)...
- Akgündüz, Ahmed; Öztürk, Said (2011). Ottoman History – Misperceptions and Truths. IUR Press. p. 35. ISBN 978-90-90-26108-9. Retrieved 28 December 2019.
- Lowry, Heath W. (2003). The Nature of the Early Ottoman State. Albany: SUNY Press. p. 153. ISBN 978-0-7914-8726-6.
- Kermeli, Eugenia (2009). "Osman I". In Ágoston, Gábor; Masters, Bruce (eds.). Encyclopedia of the Ottoman Empire. p. 444.
Reliable information regarding Osman is scarce. His birth date is unknown and his symbolic significance as the father of the dynasty has encouraged the development of mythic tales regarding the ruler's life and origins; however, historians agree that before 1300, Osman was simply one among a number of Turkoman tribal leaders operating in the Sakarya region.
- "Osman I". Encyclopedia Britannica. 18 May 2023. Osman I, also called Osman Gazi, (born c. 1258—died 1324 or 1326), ruler of a Turkmen principality in northwestern Anatolia who is regarded as the founder of the Ottoman Turkish state.
- The Ottoman Empire, 1700–1999, Donald Quataert, page 4, 2005