Khaled El-Rouayheb is an intellectual and cultural historian whose teaching and research address the development of Islamic theology and philosophy, the history of Arabic logic, and the transformation of the Arabic-Islamic world in the classical, medieval, and early modern periods. In addition to numerous articles on logic and its study in the Islamic world, he is the author of Before Homosexuality in the Arabic-Islamic World, 1500-1800 (University of Chicago Press, 2005) and Relational Syllogisms and the History of Arabic Logic, 900-1900 (Brill, 2010), editor of Afdal al-Din al-Khunaji's Kashf al-asrar ‘an ghawamid al-afkar (Iranian Institute for Philosophy, 2010), and co-editor (with Sabine Schmidtke) of the Oxford Handbook of Islamic Philosophy (Oxford University Press, 2016). In 2022, Prof. El-Rouayheb was named to a five-year term as Harvard College Professor.