The Perinn sector existed within the Outer Rim Territories as a sector. Within its boundaries was the planet Son-tuul, a jungle world. This planet was also the location of the base for the Son-tuul Pride, a criminal syndicate belonging to the Five Crime Syndicates.
The comic book series Star Wars: Darth Vader, specifically the seventh issue, Darth Vader (2015) 7 from Marvel, marked the initial canon appearance of the Perinn sector. Its formal designation as the Perinn sector, however, occurred in the reference book Star Wars Encyclopedia: The Comprehensive Guide to the Star Wars Galaxy.
Within Star Wars Legends continuity, the Perinn sector was initially referenced in Galaxy Guide 10: Bounty Hunters. This supplement for Star Wars: The Roleplaying Game was authored by Rick D. Stuart and released by West End Games.