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Romulan Neutral Zone

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Romulan neutral zone floor chart

The Romulan Neutral Zone on the floor of the Romulan Senate

The Romulan Neutral Zone was an area of neutral space between the United Federation of Planets and the Romulan Star Empire. The Neutral Zone was established after the end of the Earth-Romulan War in 2160. Entry by either side into the Zone constituted an act of war. The Romulans incorporated a map of the Neutral Zone into the Romulan Senate chamber's floor. (TOS: "Balance of Terror"; Star Trek Nemesis)


During the Neutral Zone Incursion of 2266, the location of the Romulan Neutral Zone was labeled on a map of Sector Z-6 that was displayed on the bridge viewscreen of the USS Enterprise. (TOS: "Balance of Terror", production art)

In 2293, the location of the Romulan Neutral Zone in the Milky Way Galaxy was labeled in a star chart that was in Captain James T. Kirk's quarters aboard the USS Enterprise-A. (Star Trek VI: The Undiscovered Country okudagram)

In 2366, the location of the Romulan Neutral Zone was labeled on a tactical intelligence analysis that was displayed on one of the viewscreens of the USS Enterprise-D. (TNG: "The Defector" okudagram)

In 2369, the location of the Romulan Neutral Zone was depicted by a thin line on a Deep Space 9 traffic control database map that was displayed on one of the viewscreens of the Enterprise-D. (TNG: "Birthright, Part II" okudagram)


After the Earth-Romulan War, at least eight Earth Outpost Stations were built on asteroids throughout the Zone. In 2266, four of these outposts were destroyed by a Romulan Bird-of-Prey. Commander Hansen was in command of Earth Outpost 4 until its destruction. (TOS: "Balance of Terror") Under the terms of the treaty, the Romulans had a legal right to seize and impound any Federation starship that entered the zone. (TAS: "The Survivor")

In 2311, the Neutral Zone was reinforced and redefined in the Treaty of Algeron. Deanna Troi recalled this fact when she discussed the Pegasus Incident with Commander Riker. (ENT: "These Are the Voyages..."; TNG: "The Pegasus")

In 2364, the USS Enterprise-D was ordered to investigate the Neutral Zone to solve a mystery concerning the disappearance of a string of Federation outposts. It was later established that the outposts were destroyed by the Borg due to a signature technique unique to their technology. A crew member aboard the ship, Worf, described it: "The outpost was just not destroyed, it's as though some great force just scooped it off the face of the planet." Later that year, the Enterprise-D encountered a Borg cube that had obliterated several other populations in uncharted space in the same fashion. (TNG: "The Neutral Zone", "Q Who")

In 2366, after receiving intelligence from a Romulan defector about a possible Romulan base at Nelvana III, outposts along the zone received warnings from Starfleet Command. Several independent vessels in nearby sectors received the same warning. (TNG: "The Defector")

In 2367, according to a starship mission status chart seen on the bridge of the Enterprise-D, the USS Berlin and USS Monitor were assigned to patrol this zone. (TNG: "Brothers" display graphic)

In 2369, according to a starship mission status chart seen in the observation lounge of the Enterprise-D, the Berlin and the Monitor were assigned to patrol this zone. (TNG: "Chain of Command, Part II" production art) By this year, the Federation had installed subspace listening posts and gravitic sensor nets along their side of the zone. (TNG: "Face of the Enemy") For that year, one of the missions of Starbase 12 was as a base for ships patrolling the zone. This mission was mentioned in the Sector Ipai Relay Log. (TNG: "Aquiel")

In 2370, FGMS Gyt'aerat arrived to Deep Space 9 on stardate 47556.3 from the Neutral Zone. (DS9: "Whispers" production art)

In 2373, the USS Enterprise-E was ordered to patrol the Neutral Zone during the second Borg assault on Earth, as Starfleet Command felt that Jean-Luc Picard's experience with the Borg would make him a risk during the battle to defend Earth. (Star Trek: First Contact)

In late 2374, before the Romulans joined the Dominion War, the bulk of their fleet was deployed along the Neutral Zone. (DS9: "In the Pale Moonlight") The USS Cairo disappeared and was presumed destroyed by the Dominion near the Neutral Zone. It was believed that the Dominion ships had crossed the Cardassian-Romulan border to strike the Cairo from the Romulan side of the Zone, a pattern the Dominion employed frequently and which the Romulans ignored due to their nonaggression pact with the Dominion. (DS9: "In the Pale Moonlight")

In 2379, Praetor Shinzon attempted to fool Picard into believing he wanted the Neutral Zone to be abolished. (Star Trek Nemesis)

Holodeck simulation - Captain Riker Edit

Riker personnel file 1 remastered

Romulan Neutral Zone in Riker's service record

In 2367, while exploring a cavern on Alpha Onias III, Commander William T. Riker was rendered unconscious by gases. While unconscious, neural scanners scanned Riker's brain. The scanners used elements of Riker's reality and constructed a holodeck simulation with those elements interspersed throughout, so that it felt real to him. What Riker wanted, the scanners made possible.

In one of these simulations, on stardate 49472, Captain Riker, the commanding officer of the USS Titan, was ordered to patrol this zone and provide tactical support for Starbase 384. In 2283, this zone was mentioned in Riker's service record that was on display in his quarters on the Enterprise-D. (TNG: "Future Imperfect" okudagram)

For the remastered episode of "Future Imperfect", the original text of Riker's service record was replaced.

Sectors Edit

Systems in the Romulan Neutral Zone Edit

Iconia, remastered


Nelvana III

Nelvana III

The following systems were located in the Romulan Neutral Zone:

Systems near the Romulan Neutral Zone Edit

Additionally, the following systems were located near the Romulan Neutral Zone:

Federation territory Edit

Galorndon Core, remastered

Galorndon Core


Kolarus III

Romulan territory Edit

Eden remastered


Background informationEdit

See also Edit

External link Edit

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