The Andorian system was a planetary system which contained the inhabited moon of Andoria, homeworld of the Andorians. Neighbouring the Vulcan system, it was located in the Alpha Quadrant. (ENT: "The Andorian Incident"; DS9: "Tears of the Prophets")

In 2154, the Battle of Andoria took place on the outskirts of the Andorian system. (ENT: "Kir'Shara")