Ivey Foreman Lewis (August 31, 1882 – March 16, 1964) was an American botanist and geneticist who served for two decades as dean of the University of Virginia and helped found the Virginia Academy of Science. A proponent of eugenics throughout his career, in his final years, Lewis and his sister Nell Battle Lewis gained national attention for their opposition to racial desegregation in public education, especially the United States Supreme Court decisions in Brown v. Board of Education.