Nathan Banks (April 13, 1868 – January 24, 1953) was an American entomologist noted for his work on Neuroptera, Megaloptera, Hymenoptera, and Acarina (mites).

In 1909 he reported many Costa Rican species with several new species saying "During the past few years the writer has received large series of spiders and daddy-longlegs from Costa Rica for identification".

[2] In 1924, he spent about two months in Panama, through kindness of Dr. Thomas Barbour and in company with Dr. W.M.

Between mid June and mid August they divided time between forested regions on Barro Colorado Island and more open habitat at various points along the railroad in the vicinity of Panama City (See Banks, 1929 "Spiders of Panama" for details).

He was married to Mary A. Lu Gar and they had nine children: Ruth Agnes, Bessie Gertrude, Harold Bryant, Nellie May, Gilbert Shelley, Waldo Hawthorne, Dorothy Alice, Elsie Lucille, and Douglas Hartley (who had died by 1926).