Winfred Philip Lehmann (23 June 1916, Surprise, Nebraska – 1 August 2007, Austin, Texas) was an American linguist noted for his work in historical linguistics, particularly Proto-Indo-European and Proto-Germanic, as well as for pioneering work in machine translation.
After receiving B.A. in Humanities at Northwestern College in Watertown, Wisconsin in 1936, he went on to receive his Master's degree from the University of Wisconsin–Madison in 1938 and a Ph.D. in 1941, both in Germanic philology at the University of Wisconsin.
Early in his career, during World War II, he served in the U.S. Army Signal Corps as Officer-in-Charge of the Japanese Language School and Japanese instructor. After the war he became Assistant Professor in the Department of German at Washington University in St. Louis, and was recruited in 1949 to the University of Texas at Austin as an Associate Professor of Germanic Linguistics. He was promoted to a Full Professor in 1951, and chaired that department from 1953 to 1964. He was largely responsible for developing that program into the Department of Linguistics at the University of Texas, and served as its first Chair, in the period 1964–1972.