Thomas Harvey Gill (January 21, 1891[1] – May 21, 1972[2]) was a leader in American forestry, adventurer, writer of popular fiction and editor of an academic journal.

[3] Gill played an important role in establishing the forestry division of the Food and Agriculture Organization of the United Nations and founded the International Society of Tropical Foresters.

He was also awarded the Bernhard Eduard Fernow Medal from the American Forestry Association in 1967, and was named a Fellow of the Forest History Society in 1972.

Gill's citations from foreign governments include the French Ordre du Mérite agricole in 1947 and the German Verdienstkreuz in 1961.

His 12 books of fiction included Guardians of the Desert, Death Rides the Mesa, North to Danger, Firebrand, and No Place for Women.