Humanism which is based on explaining events in the rational ground without recourse to the supernatural and see humankind as the highest value, and its roots goes back to Protagoras who says ‘man is the measure of all things’, is an important movement especially in Renaissance and after. Hence, this movement considers Ancient Greek’s ethics, art and philosophy as remarkable. The Ottoman Empire after the Tanzimat Reforms sought to understand the West systematically, and some institutions started to construct in a Western style. The politics of Abdulhamid II period thus is significant from this point in the Republican period of humanism and enlightenment. With the effect of nation state structure after World War I some man of thought in the Islamic societies came to the fore with humanistic viewpoint. This study deals with the thought of Abdullah Djevdet in terms of its contribution to the humanist movement of the Republican period. We look for, in Djevdet’s idea of Westernization, the similarities between humanism movement and the medieval and ancient Greek thought departing from a determination of the basic elements of the relation between them. We conclude that, a consideration of his life and works show that Djevdet, who is one of the prominent representatives of Radical Westernization, is among the forerunners of humanist movement in the Republican period and that consequently his thought is valuable in this regard