Ömer Demirel was born in 1960 in Etlik, Ankara.  He completed his primary and secondary education in Ankara. He graduated from Hacettepe University -Faculty of Letters-History Department in 1983. In the same year, he started to work as a research assistant in History Department of Cumhuriyet University. In 1992, Demirel completed his postgraduate degree in Hacettepe University, then, got through with doctorate programme in the Faculty of Letters of  Ankara University’s. His doctorate profession is Modern History. He was appointed as an Assistant Professor to  Faculty of Science and Letters, History Department of Cumhuriyet University. He became an Associate Professor in January in 2001 and became a Professor in 2006. In 1993, Demirel became the head of Modern History Department and he was also a representative Professor in Faculty Commission and Faculty Management Commission. There are 4 books and about 30 essays as to Ottoman Country Life and Economics History of him. Additionally, he has a book about Sivas Province Parliament Judicatums to be printed by Sivas governorship. His books published within the Ministry of Culture and Turkish Historical Society publications were prepared  on the basis of the  rich archival sources.  Both of the books have been advertised in scientific journals and used as sources for many works. Since 2008, he has been the dean of Economics and Administrative, Sciences Faculty, Interuniversitary Committee Representative, and the vice  Rector at Tunceli University.