[[Category:articles with short description]] Ertuğrul ko Ertuğrul Gazi ( Ottoman Turkish  ; Turkmen  ; mutu c. 1280 ) shi ne mahaifin Osman I. Ba a san komai game da rayuwar Ertuğrul ba. A bisa al'adar Ottoman, shi dan Suleyman Shah ne, shugaban kabilar Kay ((ikirarin da ya sha suka daga masana tarihi da yawa) na Turkawan Oghuz, wadanda suka gudu daga yammacin Asiya ta Tsakiya zuwa Anatolia don tserewa Mongol ya ci nasara, amma a maimakon haka ya kasance ɗan Gündüz Alp . A cewar wannan tatsuniyar, bayan rasuwar mahaifinsa, Ertuğrul da mabiyansa sun shiga hidimar masarautar Rum, wanda a kansa aka ba shi lada tare da mamayar garin Söğüt a kan iyaka da daular Byzantine . Wannan ya sanya jerin abubuwan da zasu haifar da kafuwar Daular Usmaniyya . Babu wani abu da aka sani da tabbaci game da rayuwar Ertuğrul, ban da cewa shi ne mahaifin Osman; saboda haka an tilasta wa masana tarihi dogaro da labaran da Ottomans suka rubuta game da shi fiye da ƙarni ɗaya daga baya, waɗanda suke da daidaitattun tambayoyi.