Rom is a fictitious character in the Star Trek universe, played by Max Grodénchik on Star Trek: Deep Space Nine. He is a Ferengi, the son of Keldar and Ishka, brother of Quark, and father of Nog.

Born around 2335, Rom lacks the business acumen typically associated with Ferengis. The Ferengi would say he doesn't have the "lobes". He has a knack for fixing things, but until around 2372 worked as a waiter and stock boy in his brother's bar on Deep Space Nine. (In the show's first episode he is credited only as "Ferengi Pit Boss".) Rom lacked confidence in himself mainly due to Quark's habit of frequently telling Rom he was "an idiot". Quark did this because he genuinely believed his brother could not succeed on his own; by putting Rom down, Quark was trying to protect him. However, after four years living among Federation and Bajoran citizens on the station, and probably inspired by his son joining Starfleet, Rom left this job to become a Bajoran maintenance/repair diagnostician. Rom turned out to have a lot of talent, and played an important role in (for example) the design of the minefield used by the DS9 crew to block access to the Bajoran wormhole before DS9 was captured by the Dominion/Cardassian alliance.

His first wife, Prinadora, bore him Nog, but she stayed behind on Ferenginar while Rom went to Deep Space Nine. The marriage was later dissolved and Rom married Leeta, a bajoran dabo girl at Quark's bar. In 2375, Rom succeeded Zek as Grand Nagus of the Ferengi.

During the first season, Rom was portrayed as someone who had no engineering knowledge at all. But during the course of the series he came to be portrayed as someone with a high degree of engineering skills.

When Grand Nagus Zek became less greedy after coming into contact with the Bajoran prophets, he founded the Ferengi Benevolent Association and appointed Rom chairman (in the episode "Prophet Motive"). Rom, acting in a manner atypical of himself, took advantage of the opportunity to embezzle money from the charity.