Leonard Part 6 (also known as Leonard Part VI) is a 1987 American spy parody film. It was directed by Paul Weiland and starred Bill Cosby, who also produced the film and wrote its story. The film also starred Gloria Foster as the villain, and Joe Don Baker. The film was shot in the San Francisco Bay Area. It earned several Golden Raspberry Awards; Cosby himself denounced and disowned it in the press in the weeks leading up to its release.

The film received universally negative reviews from critics and has often been considered to be one of the worst films ever made. It was also a box-office bomb, earning just over $4.6 million on a $24 million budget.