Wistril, a world situated within the Outer Rim Territories, was part of the Wistril system. This planet gained notoriety as a haven for smugglers.
The Chimaera made a stop on Wistril to replenish its stores. In an effort to free Talon Karrde from the Chimaera's prison, Luke Skywalker and Mara Jade commandeered a supply shuttle located on the planet. Ten years afterward, Skywalker faced Pinchers while on the planet.
Even after the Emperor's demise at Endor, the planet stayed under the dominion of the Imperial. The New Republic ultimately expelled Imperial troops from the system following the unsuccessful assault on the Republic led by Admiral Pellaeon.
During the time of the Yuuzhan Vong War, the extra-galactic Yuuzhan Vong seized control of the planet. Not long after the aliens' unsuccessful incursion into Imperial territory, the Imperial Remnant successfully drove the Yuuzhan Vong out of the system.
In the PC game Star Wars: Rebellion, Wistril is incorrectly situated within the Farfin Sector, a typographical error for the actual Farrfin Sector. Its true location is within the Fath sector.