The main purpose of this study is to give some information on Abdurrahman Şeref Efendi's history-writing, but especially his biography-writing. Abdurrahman Şeref Efendi, who was born in Istanbul in 1853 and died in the same city in 1925, is known as being the last official historiographer of the Ottoman State. He was also a history teacher, an educationalist and a politician. His first works were history textbooks that were written initially as lecture notes. One of the his most famous textbooks is known, with the title of Tarih-i Osmanî (Ottoman History), which later it was published as Tarih-i Devlet-i Osmaniyye (The History of the Ottoman State). Furthermore, Abdurrahman Şeref Efendi has written biographies of some of the famous Ottoman Statesmen who had lived at the end of the 19th century or in the early years of 20th century. His articles on biographies were published in newspapers and magazines. These newspapers or magazines were Sabah, Vakit, Servet-i Fünun, Tarih-i Osmani Encümeni Mecmuası, Düşünce Mecmuası, Yeni Mecmua and Nevsal-i Millî. Altough some of his articles on biography are in his book which was published with the title of "Musahabe-i Tarihiyye " (Conversations of History), some of them exist ones in the old newspapers and magazines. I, however, have collected all his articles which were published in newspapers and magazines, except of those in the "Tarih-i Osmani Encümeni Mecmuası".His first article which was published, was called "Ethem Paşa Merhumun Son Hizmeti " (The Final Service of Deceased Ethem Pasha) in Sabah on 26th December 1909. İn his book, called İlm-i Ahlâk (Morals Sciences), Which was written for the students of Mekteb-i Mülkiye, he says "History strengthens our memory telling us about the past and our ancestors and formers and biographies of the famous men. " The list of his articles on biography is given as an appendix at the end of this article for the first time.