Reginald Ruggles Gates (May 1, 1882 – August 12, 1962), was a Canadian-born geneticist who published widely in the fields of botany and eugenics.

from McGill University were interrupted by a year in which he returned to his childhood home in Middleton, Nova Scotia, where he served as vice-principal in a local school.

in 1905, focusing on botany, before accepting a Senior Fellowship at University of Chicago where he completed his Ph.D. on heredity in Oenothera lata (evening primrose) in 1908.

[2][1] His nomination readsProfessor Gates enjoys a widespread reputation as a distinguished investigator of cytological problems and especially in connection with genetics.

[10] He was a founder of Mankind Quarterly and the International Association for the Advancement of Ethnology and Eugenics,[7] his articles abounded in the journal as Acta Geneticae Medicae et Gemellologiae.

Gates did not contest the divorce, although he disputed Stopes's claims, describing her as "super-sexed to a degree that was almost pathological" and adding to this "I could have satisfied the desires of any normal woman".