Wazoo is a live album by Frank Zappa, posthumously released in October 2007 as a 2-CD set consisting of the complete concert given by "The Mothers of Invention/Hot Rats/Grand Wazoo" 20-piece big band on September 24, 1972 at the Music Hall, Boston, Massachusetts, United States. It is the third installment on the Vaulternative Records label that is dedicated to the posthumous release of complete Zappa concerts, following the releases of FZ:OZ (2002) and Buffalo (2007).