Best Defense is a 1984 American action comedy film, starring Dudley Moore and Eddie Murphy. The original music score was composed by Patrick Williams. It was released by Paramount Pictures.

The film follows the lives of two different characters, who never interact. One of the two sub-plots involves an engineer who tries to develop a new gyroscope for tanks, and eventually uses the design plans of a murdered competitor. The other subplot involves a tank commander who accidentally wanders into a war zone while trying to navigate a poorly designed tank.

The film was released on July 20, 1984, grossing a total of $19 million at the box office, and received negative reviews from critics.