Peter S. Eagleson (27 February 1928 - 6 January 2021) was an American hydrologist, author of Dynamic Hydrology and Ecohydrology: Darwinian Expression of Vegetation Form and Function. He taught at the Massachusetts Institute of Technology since 1952 and was a Professor Emeritus. He held professional positions including member of the National Academy of Engineering (since 1982) and President of the American Geophysical Union from 1986-1988. He won many awards including the Stockholm International Water Institute's World Water Prize in 1997.
