Kayhan Orbay

Prof. Dr. Kayhan Orbay is a Professor in the Department of History at Middle East Technical University (METU). He holds a Ph.D. from Vienna University (2007), an M.A. from Bilkent University (2001), and additional degrees from Ankara University. His research focuses on Ottoman Economic and Social History, 17th Century General Crisis, the Celali Effect, and related fields.

Education:

• Ph.D., Vienna University, 2007
• M.A., Ankara University, 2011
• M.A., Bilkent University, 2001
• B.A., Ankara University, 1995

His research interests include Ottoman Economic and Social History, the 17th Century General Crisis, the Celali Effect, History of Prices, Waqf System, Accounting History, and the Çift-Hane System. He has published extensively on topics such as historical accounting records and economic analyses within the Ottoman context.

His publications explore Ottoman financial systems and historical economic data. Notable works include studies on Celali records in account books and analyses of waqf accounting and price indices in the Ottoman Empire.

Prof. Orbay teaches courses such as Ottoman Socio-economic History and Crisis and Change in the Ottoman Empire. He has advised numerous students, though specific names are not listed here. His research has been supported by various grants, details of which are not provided in the text.