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- Jabba the Hutt – voiced by Larry Ward and operated by Mike Edmonds, Dave Barclay, Toby Philpott, and John Coppinger
- A crime boss employing bounty hunters in The Phantom Menace, The Clone Wars, A New Hope and Return of the Jedi, killed by Leia Organa aboard his sail barge in Return of the Jedi.
- Mara Jade Skywalker – portrayed by Shannon McRandle
- "Emperor's Hand" to Palpatine during his reign; Luke Skywalker's wife.
- Shimrra Jamaane
- The Supreme Overlord of the Yuuzhan Vong Empire who turned out to be nothing more than a puppet by the Force-sensitive Vong Shamed One Onimi. By the end of The New Jedi Order, he was killed in combat by Luke Skywalker.
- Queen Jamillia – portrayed by Ayesha Dharker
- Queen of Naboo succeeding Padmé Amidala.
- Wes Janson
- A fighter pilot and founding member of the elite Rogue Squadron, who was featured during one scene in The Empire Strikes Back as the gunner for Wedge Antilles' T-47 Snowspeeder. He is also heavily featured in the X-wing Series and is mentioned frequently for his light-hearted, almost childlike demeanor.
- Jarael
- A young female Arkanian in the comic book series Star Wars: Knights of the Old Republic
- Carnor Jax
- Member of the Emperor's Royal Guard who bribed the Emperor's physician to poison Palpatine's clones. Antagonist of the Crimson Empire series.
- Jedgar
- Apprentice of Kadann who became the leader of the Prophets of the Dark Side after the death of Kadann.
- Jerec – portrayed by Christopher Neame
- Dark Jedi and main antagonist in Star Wars Jedi Knight: Dark Forces II.
- Moff Jerjerrod – portrayed by Michael Pennington
- Commanding officer of the second Death Star.
- Commander Jet
- The Clone Commander of Ki-Adi-Mundi in The Clone Wars in the episode Landing at point rain.
- Dexter Jettster – voiced by Ronald Falk
- A four-armed alien that wears a heavily stained apron. He is a good friend of Obi-Wan's.
- Qui-Gon Jinn – portrayed by Liam Neeson
- Jedi Master trained by Count Dooku. Trains Obi-Wan Kenobi. Found Anakin Skywalker on Tatooine and vowed to train him but was killed by Darth Maul.
- Jubnuk
- One of Jabba the Hutt's Gamorrean guards. He was eaten alive by the Rancor.
- Bardan Jusik
- Jedi Knight who fought in the Clone Wars, later left the Jedi Order to become a medic, and eventually joined the Mandalorians.
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