Lizzie Koontz Weeks (1879 – September 20, 1976) was an African-American activist in Portland, Oregon. She was a commissioner for the National Emancipation Commemorative Society in 1912. In 1914 she was elected president of the Colored Women's Republican Club. The organization was created to support the candidacy of Robert A. Booth, C. N. McArthur, and others on the Republican ticket. The club also organized voter registration drives to help black women become registered voters and held candidate talks to inform Black voters about political issues.