Christian Troll is Honorary Professor for the Study of Islam and Christian-Muslim Relations at the Philosophisch-Theologische Hochschule St. Georgen in Frankfurt; Germany. He was a Professor at the Vidyajyoti Institute of Religious Studies in Delhi, a Senior lecturer at the Center for the Study of Islam and Christian-Muslim Relations in Birmingham, a Professor of Islamic Institutions at the Pontifical Oriental Institute, and a regular Guest Professor at Ankara University. He has published many books on Islamic thought and the intersection of Islam and Christianity in the world.