Gamma Eridon is a star in Klingon space, located between the Klingon-Romulan border and the inner worlds of the Klingon Empire.
In 2368, Jean-Luc Picard's blockade armada retreated to this location to regroup, following the disabling of their tachyon detection grid, seeking to establish a new grid. However, this proved unnecessary as the USS Sutherland detected the Romulan forces by another method. (TNG: "Redemption II")
- In the game Star Trek: Armada, the Gamma Eridon system is infested by the Borg, and Chancellor Martok launches an attack to destroy all forces in the system.