Jeffries Wyman (June 21, 1901 – November 4, 1995) was an American molecular biologist and biophysicist notable for his research of proteins, amino acids, and on the physical chemistry of hemoglobin, including the classic Monod-Wyman-Changeux model. Wyman was a member of the National Academy of Sciences and of the American Academy of Arts and Sciences, the first scientific advisor to the US Embassy in Paris, director of a regional science office in the Middle East for UNESCO, a founder and past secretary general of the European Molecular Biology Organization, professor of biology at Harvard. Harvard University established Jeffries Wyman Fellowship in his name.