Charles Eucharist de Medicis Sajous (December 13, 1852 – April 27, 1929) was an American endocrinologist, laryngologist, and writer based in Philadelphia.

[1] In 1881, he was appointed a professor of anatomy and physiology at the Wagner Free Institute of Science, and in 1883, he became a clinical lecturer in laryngology at Jefferson Medical College.

[3] Sajous wrote two textbooks on laryngology that were published by the F. A. Davis Company in 1885: Hayfever and Its Successful Treatment by Superficial Organic Alteration of the Nasal Mucous Membrane and Lectures on Diseases of the Nose and Throat.

After The Annual of the Universal Medical Sciences ceased publication in 1896, Sajous and the F. A. Davis Company published a textbook for general practitioners titled Analytic Cyclopedia of Practical Medicine, which had ten editions from 1898 to 1927.

Their son Louis Theodore de Medicis Sajous studied medicine and worked with his father on his endocrinology research.