Word of Mouth is the second solo studio album by American bassist Jaco Pastorius, released in 1981, while he was still a member of the jazz fusion group Weather Report, and also the name of a big band that Pastorius assembled and with which he toured from 1981 to 1983.

While his debut album showcased his eclectic and impressive skills on electric bass, Word of Mouth focused more on his ability to compose and arrange for a larger band.

The album still shows off Pastorius's skill, most notably in the solo opening to "Chromatic Fantasy" by J.S.

The band included Herbie Hancock, Wayne Shorter, Peter Erskine, Jack DeJohnette, Michael Brecker, Don Alias, and Toots Thielemans, who is featured on harmonica on many of the songs.

As the result of a lawsuit against Warner Bros., CBS forbade the names of a few of the (less well-known) musicians to be mentioned on the sleeve.