Nog is a character in the fictional Star Trek universe, played by Aron Eisenberg . He is a Ferengi, the son of Rom and nephew of Quark in the series Star Trek: Deep Space Nine.

Nog was born to Rom and Prinadora in Ferenginar on 2353. Later he moved with his father to Deep Space Nine and worked at his uncle Quark's bar. With Jake Sisko, he was one of the first students in Keiko O'Brien's school. Rom's incompetence with money and proficiency with mechanics and electronics are traits he passed on to Nog. In 2371 he went through the Ferengi coming of age rite and purchased an apprenticeship with Captain Benjamin Sisko, and went on to Starfleet Academy, to become the first Ferengi in Starfleet. He participated in the Dominion War, losing his left leg in the Battle of Ar-558. Nog was sent to a hospital facility and his leg was replaced with a bionic leg, and Nog chose Vic Fontaine's club in the holodeck as the place to rest during recovery. Captain Sisko recognized Nog's heroism in battle, and as his last act as a Starfleet Officer before joining the Prophets, had promoted Nog to the rank of Lieutenant.