Dimitrios P. Theoharis or Dimitris Theoharis (Athens, 1919 - Thessaloniki, December 2, 1977) was a Greek archaeologist, university professor and one of the pioneer scholars of the pre-ceramic and mesolithic culture of Thessaly.

Maria Theohari was born in 1933 and studied History and Archeology at the National Kapodistrian University of Athens. She did her postgraduate studies in Heidelberg, London and Cambridge, specializing in prehistoric Archaeology. She was one of Spiros Marinatos students whom she followed in various excavations, mainly in the Peloponnese. In one of them she met her future husband Dimitris Theoharis and afther their marriage she became his main collaborator in the research of prehistoric Thessaly.