Thomas Lyttleton Lyon (17 February 1869 – October 7, 1938) was an American soil scientist who wrote on the nitrogen cycle.
He then returned to the University of Nebraska as an instructor and in 1895, on the death of C. I. Ingersoll, the agriculturist and department director, became assistant professor there.
[3] During his eleven years of service at the university, he was instrumental in the distribution of durum wheat, Kherson oat from south Russia, bromegrass, and various varieties of early maturing corn in the state.
[5] In 1912, Professor Lyon was named head of the department of soil technology at the Cornell University College of Agriculture.
[8] In 1913, he and fellow Cornell Professor James A. Bizzell were awarded the Howard N. Potts Medal for their paper, "The Relation of Certain Non-Leguminous Plants to the Nitrate Contents in Soil".