Yntrann was a planet situated within the Yntrann system, which itself resided in the region known as Wild Space. Subsequent to the dissolution of the Rebel Alliance's Special Forces Scandium Team during the Galactic Civil War, Rith Tar'ak, an Ebranite and former member of the team, found herself reassigned to Yntrann. There, she held a brief commanding position over a small but highly regarded desert warfare task force, which was part of an early Special Forces wilderness regiments. Ultimately, Tar'ak's lack of enthusiasm for leadership led her to request a transfer to a different Alliance division, resulting in her being stationed away from Yntrann.
The planet Yntrann was first referenced within "Cracken's Rebel Operatives," a source article for the Star Wars: The Roleplaying Game by West End Games. The article was a roleplaying game article written by C. Robert Carey and Trevor J. Wilson and appeared in Star Wars Adventure Journal 11 in November of 1996. The Essential Atlas, a reference book from 2009, established the location of the Yntrann system (and thus the planet Yntrann) as grid square O-3.
- " Cracken's Rebel Operatives " — Star Wars Adventure Journal 11 (Initial mention)