"The Slaver Weapon" is the fourteenth episode of the first season of the American animated science fiction television series Star Trek: The Animated Series. It first aired on NBC on December 15, 1973, and was written by Larry Niven. It was based on his original short story "The Soft Weapon". This episode was expanded to become the first half of a full-length novel by science-fiction author Alan Dean Foster as Star Trek Log Ten.

Set in the 23rd century, the series follows the adventures of Captain James T. Kirk (voiced by William Shatner) and the crew of the Starfleet starship Enterprise. In this episode, while traveling by shuttlecraft, several Enterprise crew members are captured and have to use their individual strengths to prevent a powerful alien weapon from falling into the wrong hands.

On stardate 4187.3, the Enterprise shuttlecraft Copernicus, carrying Science Officer Spock (voiced by Leonard Nimoy), Communications Officer Lt. Uhura (voiced by Nichelle Nichols), and Helmsman Lt. Hikaru Sulu (voiced by George Takei) are en route to Starbase 25 to deliver a stasis box, a rare artifact of the Slaver culture. The now-extinct Slavers used these objects to carry weapons, valuables, scientific instruments and data. The boxes can detect each other and evidence shows that another device is located near Beta Lyrae.

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