Nel III was the third planet in the Nel planetary system. This was one of two inhabited planets in the system. By 2368, political subdivisions on this planet included Alpha Municipality, Gray Municipality and Epsilon Municipality. Two medical installations were Taylor Hospital and Wiemer Medical Facility.
This planet was one of eleven visited by a group of Ullian telepathic historians in the 2360s, who collected a library of memories from the inhabitants. Soon after the visit, the planet reported two unexplained comas. The comas were later determined to be a result of telepathic memory invasion perpetuated by Jev. A person of interest in the case, Tarmin, was exonerated as he was on his species' homeworld at the time of the visit. (TNG: "Violations")