Unnamed Gamma Quadrant star systems
The following are unnamed Gamma Quadrant star systems.

Rakhar star system 
This star system was located in the Rakhari sector. The Rakhari homeworld Rakhar was in this system.

In 2369, in the wake of Croden, a Rakhari, murdering an individual on Deep Space 9, the senior staff had a discussion on how they should contact Rakhar and inform them that one of their citizens had committed a homicide on the space station. Major Kira Nerys believed that the Rakhari authorities would be pleased to know that Croden had been arrested, as he probably had committed other crimes in this system, and that he was no longer their problem. ()

Gamma quadrant binary star system 
This binary system was close to the Gamma Quadrant exit of the Bajoran wormhole in a sector Starfleet was only beginning to explore when they were forced to urgently chart the system after a runabout crash in 2369. The system contained at least seven planets, two dozen or so moons, and an asteroid belt. The sixth planet had three moons. The third planet contained one moon, which was made into a penal colony. 

The star emitted an abnormally large amount of delta radiation, making scanning the system difficult. Scans indicated no M class planets, making survival seem impossible, though these scans could not be trusted, and a life-sustaining moon was later found. ()

J class gas giant system 
This remote system in the quadrant was the site of a meeting between the  and a Karemma ship in 2372. 

The system was a single star system with a Class J planet and its moons. ()

Saltah'na system 
The  of this system was explored by a Klingon starship  in 2069. They found it to be unsuitable for a colony, but did retrieve Saltah'na artifacts. ()

Yadera II system 
This system had at least two planets, including Yadera II. This planet was the home for sentient holographic lifeforms. A Federation runabout visited this system in 2370. ()

Gaia system 
This system contained a primary orbited by several planets. The fourth, Gaia, was encased in an energy barrier that would make the planet inaccessible in 2373. 

In an alternate timeline, this planet was colonized by the crew of the  in the 22nd century. ()