The Fyrth system was a star system located in the Inner Rim that contained the Fyrth asteroid fields. The fields served as the exclusive source of opila crystals which were sometimes used in lightsaber construction in the era of the Jedi Civil War.
- Star Wars: Knights of the Old Republic (First mentioned)
- Star Wars: Knights of the Old Republic II: The Sith Lords (Mentioned only)
- Knights of the Old Republic II: The Sith Lords: Prima Official Game Guide
- The Complete Star Wars Encyclopedia
- The Essential Atlas