The Thebaid or Thebais (Greek: Θηβαΐδα, Thēbaïda or Θηβαΐς, Thēbaïs) is the region of ancient Egypt containing the thirteen southernmost nomes of Upper Egypt, from Abydos to Aswan. It acquired its name from its proximity to the ancient Egyptian capital of Thebes.
Around the 5th century, since it was a desert, the Thebaid became a place of retreat of a number of Christianhermits, and was the birthplace of Pachomius. In Christian art, the Thebaid was represented as a place with numerous monks.
Bagnall, R., J. Drinkwater, A. Esmonde-Cleary, W. Harris, R. Knapp, S. Mitchell, S. Parker, C. Wells, J. Wilkes, R. Talbert, M. E. Downs, M. Joann McDaniel, B. Z. Lund, T. Elliott, S. Gillies. "Places: 991398 (Thebais)". Pleiades. Retrieved March 8, 2012.