The Epsilon Nel system is a star system with two inhabited planets. The Nel system was visited by Ullian telepathic historian Jev in the 2360s. Shortly following his visit, two unexplained comas were reported on Nel III. They were later found to be a result of telepathic memory invasion perpetuated by Jev. (TNG: "Violations")

The designation "Epsilon Nel" was visible on a computer monitor in the episode.

• Nel (primary)
  • Nel I
  • Nel II
  • Nel III