The Grand Wazoo is a studio album by Frank Zappa and The Mothers, released in November 1972. It was written and recorded during Zappa's period of convalescence after being assaulted in December 1971 in London, UK.
Along with its predecessor Waka/Jawaka (July 1972), this album represents Zappa's foray into big band music, the logical progression from Hot Rats (1969) (which used a much smaller lineup). This was the last release on Zappa's own Bizarre Records label.
This was the third Zappa album released in a period where he needed to use a wheelchair. Zappa was unable to tour after being assaulted and pushed offstage into an orchestra pit during a concert on December 10, 1971 at the Rainbow Theatre in London, UK.
The album is mostly made up of instrumental pieces, similar in style to those of three previous albums: Hot Rats (October 1969), Burnt Weeny Sandwich (February 1970), and Waka/Jawaka (July 1972).