The Vulcan System is a system located in the Vulcan Sector of the Beta Quadrant. One of its planets, Vulcan, is the homeworld of the Vulcan species and the Sehlat, as well as a founding member of the United Federation of Planets.
The Vulcan System consists of at least three planets, one of which revolves around the sun on an eccentric orbit. Vulcan has no moon and there are no anomalies in the system. A Starfleet space station with adjacent dry docks is located in the planet's orbit, and numerous starships - most of them D'Kyr Science Vessels - are often sighted patrolling the system.
- “Ancestral Sin”: The Romulan Ambassador Jirok visits planet Vulcan in a diplomatic mission.
- “Diplomatic Orders”: The Vulcan Ambassador Sokketh requests to be transported to the P'Jem System for contemplation but is in fact an Undine Infiltrator.
- “Empress Sela”: A Starfleet task force under Admiral T'nae has to stop a surprise attack on Vulcan by Empress Sela of the Romulan Star Empire.