Stewjon was an astronomical object that was the homeworld of Obi-Wan Kenobi, a male human Jedi Master. Between 32 and 29 BBY, Kenobi told his Padawan, Anakin Skywalker, that he did not remember leaving his homeworld.

The name of Obi-Wan Kenobi’s homeworld was coined by George Lucas, the creator of Star Wars. At the Celebration V convention in Orlando, Florida, comedian and talk-show host Jon Stewart interviewed Lucas, and Stewart asked for the name of Obi-Wan Kenobi’s home planet. Lucas jokingly replied that it was «Stewjon,» a tuckerization of Stewart’s name. The official StarWars.com Encyclopedia entry on Obi-Wan Kenobi later listed Stewjon as Kenobi’s homeworld.

According to «The Trouble at Tibrin» author Landry Q. Walker, Stewjon was the homeworld of Tadd Marteens, a farmer who joined the Alliance to Restore the Republic after the Battle of Yavin.