Tilman Nagel (* 19. April 1942 in Cottbus) is a German orientalist and Islamic scholar. Since 1989 he has been a full member of the Academy of Sciences in Göttingen. Nagel studied Islamic Studies, Comparative Religious Studies and Central Asian Studies at the University of Bonn. After his doctorate in 1967 and his habilitation (Venia legendi) in 1971, he worked until 1981 at the Seminar for Oriental Languages at the University of Bonn. From 1981 to 2007 he taught and researched as Professor of Arabic and Islamic Studies at the University of Göttingen and was emeritus at the end of the summer semester 2007.

Nagel has written important standard works in Islamic Studies. His summum opus is Mohammed's biography, published in 2008 and comprising over 1000 pages.

De Gruyter Oldenbourg books by Tilman Nagel:

. Allahs Liebling: Ursprung und Erscheinungsformen des Mohammedglaubens, München 2008, ISBN 978-3-486-58535-3

. Mohammed - Leben und Legende, München 2008, ISBN 978-3-486-58534-6

. Mohammed - 20 Kapitel über den Propheten der Muslime, München 2010. ISBN 978-3-486-59705-9