Rules of Acquisition (Star Trek: Deep Space Nine)

"Rules of Acquisition" is the seventh episode of the second season of the American science fiction television series Star Trek: Deep Space Nine. It is the 27th episode overall.

Set in the 24th century, the series follows the adventures on Deep Space Nine, a space station located near a wormhole between the Alpha and Gamma quadrants of the galaxy. This is one of several episodes to focus on the Ferengi, an alien species known for their devotion to earning profit, exploring their sexist social norms. In this episode, Deep Space Nine's Ferengi bartender Quark is sent to establish a Ferengi business presence in the Gamma Quadrant, assisted by Pel — a Ferengi female who disguises herself as a male to be permitted to engage in business.

The title of the episode refers to the Rules of Acquisition, a set of aphorisms that are said to govern Ferengi business practices, several of which are quoted in the episode.