The purpose of this study is to present all Written Mongol words of certain or possible Turkic origin with their cognates in Middle Mongol, modern Mongolic languages and Manchu. The word list is structured to be beneficial both to researchers who study the language contact between Turkic and Mongolic and to scholars who carry out research on their possible genetic relationship. Due to its length, the study is divided into three parts, of which the first part gives the Written Mongol words of Turkic origin in alphabetical order from A to D.