List of unnamed planets located in the Gamma Quadrant.
Class J gas giant
This gas giant in a remote system was the location of a meeting between the USS Defiant and a Karemma ship in 2372. It had at least two moons. (DS9: "Starship Down")
Dominion planet
In 2370, Commander Benjamin Sisko, Jake Sisko, Quark, and Nog went on a camping trip on this planet. They were imprisoned by the Jem'Hadar and also made first contact with the Vorta here. (DS9: "The Jem'Hadar")
Internment Camp 371 gas giant
The asteroid housing Dominion Internment Camp 371 was orbiting this gas giant. (DS9: "In Purgatory's Shadow")
Yaderan colony
The Yaderan colony was located on the second planet of an unnamed star system in the Gamma Quadrant. This colony, located in a small valley, was a holographic projection created by Rurigan and powered by a matter-antimatter reactor. The reactor generated a Omicron particle field. This field was discovered by a Federation runabout that traced the field's origin to this planet in 2370. The runabout's crew, Jadzia Dax and Odo, made contact with the colony. (DS9: "Shadowplay")