Ari Gold is a fictional character on the comedy-drama television series Entourage and its sequel film. He is played by Jeremy Piven.

Ari Gold (born 1967) is a graduate from Harvard University and has a J.D./M.B.A. from the University of Michigan's Ross School of Business.

Ari is Jewish and has one brother, Howard. In spite of making multiple exaggerations of a sister, Ari also stated that he does not have a sister. Despite his position as one of the most powerful agents in Hollywood, Ari's aggressive and sometimes boorish behavior is frequently held in check by his wife (who is independently wealthy, having received a large inheritance from her father). Despite frequent sexual innuendos, Ari has never cheated on his wife since they married.

Ari and Eric Murphy are the primary influences in Vince's professional life. Due to their lifelong friendship, Vince follows Eric's advice much more than he does Ari's, despite Ari's wealth of experience. This leads to frequent verbal clashes between Eric and Ari. While neither particularly likes the other, they realize that they are in a marriage of necessity. But as time passes, they grow to have a mutual respect for one another, which eventually leads to them becoming friends with Ari mentoring Eric as he becomes a talent manager.

In season 1, Ari tries to get Vince to do a film called Matterhorn which he describes as being like, "Die Hard at Disneyland." Vince and Eric hate the script and are interested in an independent film - Queens Boulevard - that they've been introduced to by Ari's former assistant turned rival agent, Josh Weinstein.

Ari is angry that another agent is whispering in the ear of his client and discourages Vince from doing the film due to its small budget. Unmoved, Vince insists Ari lock down the movie. Ari later claims that he has received no offer from the producers, but Vince and Eric learn otherwise when they are invited to a beach party by Josh Weinstein. Panicked that he's about to lose Vince as a client, Ari abandons his son's birthday party to go talk to Vince and Eric at the beach. He confronts Josh Weinstein and humiliates him in front of his guests. Ari then finds Vince and admits that the offer came in and that he lied about it because he's trying to do what's best for Vince's career. He agrees to get the deal done provided that Vince's next movie is a big-budget studio project.

During most of season 2, Ari is fixated on getting Vince interested in doing Aquaman a mega-budget superhero action film being produced by Warner Bros. Vince balks at the offer, believing it's not his style, but Ari insists that Vince desperately needs to do a "commercially viable popcorn flick" in order to raise his profile in the wake of season 1's micro-budget indie flick, Queen's Boulevard. Vince resists the pressure of both Ari and Eric to do Aquaman until he finds out James Cameron has been tapped to direct. Vince tells Ari to lock down the film, only to find out that the role is no longer guaranteed for him as Cameron isn't familiar with Vince's work.

Ari arranges a meeting between Vince and Cameron but is accidentally undermined by Eric who simultaneously convinces Cameron to see Queen's Boulevard, which is premiering at the Sundance Film Festival. Cameron cancels the meeting, opting to view the film instead, leaving Ari angry with Eric. Cameron leaves the Queen's Boulevard screening 10 minutes into the film, and Ari is convinced Aquaman is lost. Shortly after, Ari calls Vince and conferences in Cameron who offers Vince the lead in Aquaman.