Samir Khalil Samir (born Samir Kosseim; 10 January 1938 in Cairo, Egypt), is an Egyptian Jesuit priest, Islamic scholar, Semitologist, Orientalist, Syriacist and Catholic theologian. Based in Lebanon (Université Saint Joseph) he is a regular visiting professor of several academic institutions in Europe and the USA.
Samir entered the Jesuit order on the 26 October 1955, in Aix-en-Provence (France) and undertook the study of Philosophy, Theology and Islamic studies. He graduated with a thesis on oriental Catholic theology and Islamic studies. Thereafter, he established 20 schools for reading and writing in Egypt and then taught for 12 years at the Pontifical Oriental Institute in Rome. In 1986, he moved to Lebanon during the civil war there and now teaches at the Saint Joseph University, specialising in Catholic theology and Islamic studies.
At the same time he created the research institute CEDRAC in Beirut, which collects literature on the Christian heritage in the Near East. He is also a Professor at the Pontifical Oriental Institute and at the Centre Sèvres (Jesuit Faculty of Theology and Philosophy) in Paris. He holds the same post at the Maqasid Institute in Beirut, where uniquely he teaches the imams about Christianity and at ISSR in USJ teaches Muslim studies. He has been a visiting professor at the University of Graz (Austria), Sophia University (Tokyo), Al-Azhar University (Cairo), and Georgetown University (USA), at the Center for Muslim-Christian Understanding, Washington, D.C..