The Quelii sector represented a sector situated within the Outer Rim territories of the galaxy. Within its boundaries lay the Dathomir system, the location of a battle that transpired amidst the Clone Wars, pitting the Confederacy of Independent Systems against the Nightsisters.
The initial identification of the Quelii sector within canon occurred in the 2015 reference work titled Ultimate Star Wars, which presented an erroneous spelling, "Quelli." A revised iteration of the book, specifically Star Wars Encyclopedia: The Comprehensive Guide to the Star Wars Galaxy, launched in 2024, indicates that the planet Abafar is part of the Quelii sector, a detail that clashes with earlier publications that assigned the planet to the Sprizen sector.