Distinguished Prof. Mükrimin Hahil Yinanç was born in 1900 at Elbistan and due to his father’s position as a Muslim judge (cadi), he completed his elementary and high school educations in various cities of Anatolia. He has been one of the doyens in the fields of Islam history and Seljuk period Turkish history owing to his studies after joining Istanbul University in 1933. He was a scientist who devoted himself into Middle Ages Islam history and Anatolian Turkish history. Most of his studies that referenced by almost all scientists are on Seljuks and he has numerous papers at Encyclopedia of Islam (Islam Ansiklopedisi) and several other journals. Besides the Seljuk political history, in his studies, he also covered the history of Anatolian cities that formed Turkish-Islam identity during Seljuks period, Seljuk statesmen, historians as well as their studies. In this paper, we review Distinguished Prof. Mükrimin Halil Yinanç’s studies on Seljuks and describe the contributions of his studies to the literature of history.