Genoa Washington (born 1895 or 1896; died October 14, 1972) was an American politician who served in the Illinois House of Representatives from 1967 until his death in 1972. A Republican member from Chicago, he worked on legislation related to civil rights and women's rights. Washington ran unsuccessfully for the US House of Representatives in 1954 and 1960. He also served as alternate US delegate to the United Nations General Assembly in 1957, and as delegate to the Republican National Convention in 1952, 1964, and 1968.

Washington earned his Bachelor of Science degree and Juris Doctor at Northwestern University. He later held positions as vice president of the Cook County Bar Association, and as president of the Chicago branch of the NAACP. He served in the US Army and was involved in Freemason organizations.

Genoa Washington was born in 1895 or 1896 in Washington, D.C. He was the oldest of three children and the only son. His parents were Virgil William Washington, a Methodist minister and general secretary of missions at the Christian Methodist Episcopal Church, and Lucy Virginia Bonner. The younger Washington attended primary and secondary schools wherever his father's work took the family. He earned a Bachelor of Science degree and Juris Doctor at Northwestern University in Evanston, Illinois, and was admitted to the Illinois bar in 1929. Washington served as vice president of the Cook County Bar Association, and as president of the Chicago branch of the NAACP. He was enlisted in the US Army as a private and was discharged as a captain of infantry. As a Freemason, Washington was a member of the Scottish Rite, affiliated with Prince Hall Freemasonry, and a master of the Richard E. Moore Lodge.

Washington served as an alternate delegate during the 1952 Republican National Convention. He was the only member of the Illinois delegation to vote for Dwight D. Eisenhower; the rest voted for Robert A. Taft. During the 1954 US House elections, Washington ran to represent Illinois's 1st congressional district, winning the Republican primary but losing the general election to the Democratic incumbent, William L. Dawson.

Eisenhower, by then elected president, appointed Washington as alternate American delegate to the Twelfth session of the United Nations General Assembly in 1957, where he served on the Special Political Committee. Eisenhower ended up appointing eight African Americans as alternate representatives to the UN, surpassing his Democratic predecessor, Harry S. Truman, who had appointed only three.

Washington then ran again in the 1960 US House elections for the 1st district. In the Republican primary, he ran against James M. Burr, who previously had sought the nomination unsuccessfully in 1958. Washington won the Republican primary but again lost the general election to Dawson. During the 1964 Republican National Convention, Washington and Euclid Taylor, a Chicago-based attorney, served as the only two African American delegates from Illinois, representing the 1st congressional district. Even though both were pledged to Nelson Rockefeller, Washington stated during a closed caucus meeting that he had wanted to vote for the eventual nominee, Barry Goldwater, to show unity. During the convention, Washington gave one of the speeches seconding Rockefeller's nomination. He and Taylor joined two other Illinois delegates in supporting a proposal by William Scranton, governor of Pennsylvania, which would have modified the Republican platform to call for strengthening federal enforcement of civil rights legislation. Scranton's proposal failed at the convention. At the next Republican National Convention in 1968, Washington again supported Rockefeller for the presidential nomination, while most of the Illinois delegation backed Richard Nixon. Washington was also one of two Illinois delegates who abstained on the vice presidential ballot, declining to support Spiro Agnew.

Washington was elected to the Illinois House of Representatives in 1966. He represented the 22nd district, reclaiming a seat that Democrats had taken control of in 1964. From 1967 through 1972 he worked on bills related to civil rights and women's rights. Washington supported a fair housing proposal in 1967 that prohibited real estate brokers from refusing to sell or rent African Americans, but it contained an exception when the property owners explicitly consented to the discrimination. Washington did not believe the legislature would pass a bill prohibiting discrimination by homeowners, as such a proposal would have been seen as "forced housing". In 1969, he and other Black members of the House filibustered an appropriations bill for the Illinois Department of Conservation to secure funding for recruitment and job training of minorities. In 1972, Washington sponsored an emergency appropriations bill directing $19 million to public aid.

During his campaign for reelection in 1972, Washington faced three challengers for the Republican nomination, including Susan Catania, a freelance technical publications consultant. The Chicago Tribune reported that Catania was running "one of the most vigorous campaigns of the year", in contrast to the other candidates. Washington was confident of his reelection and led a relatively quiet campaign.

Washington had cancer and did not survive the election season, dying in his home on October 14, 1972, at age 76. Catania succeeded him as the Republican representative from their district.