Jeanette Testu (1900 – January 10, 1964) was an American politician who served eight terms in the Washington House of Representatives between 1943 and 1963. In her last term, she served as Speaker Pro Tempore. She represented Washington's 34th legislative district as a Democrat. She served on numerous committees in her time in the legislature, including terms as chair of the Transportation Committee (1949–1951), Colleges and Universities Committee (1951–1953), and Memorials Committee (1953–1955).