The Harridan system, a star system, existed within the Dantus sector situated in the Outer Rim Territories; it encompassed the planet known as Harridan.
- The Challenge 41 installment, " Paid in Full " , initially referenced it. (Unlicensed)
- The reference "Twinkle, Twinkle Little Star, How I Wonder Where We Are" is from Voyages SF 13. (Unlicensed)
- The Essential Atlas
- An article on StarWars.com, Star Wars: The Essential Atlas Online Companion, also mentions it. (backup link)