The Galaxy Garrison (銀河警備軍 Ginga keibi-gun ), or simply called "the Garrison" is one of the main headquarters of the Galaxy Alliance.
The Galaxy Garrison originated from Armored Fleet DaiRugger XV, which was later adapted in the Vehicle Force portion of Voltron: Defender of the Universe. It is one of the few elements taken from DaiRugger XV that has been a constant in most Voltron continuities.
Garrison Headquarters is the administrative center of the Galaxy Alliance located on Earth. The sprawling complex overlooks a bay by the sea. After the first defeat of Lotor, it continued to serve as the command center of the Galaxy Alliance.
The buildings contain offices for military leaders of the Alliance and their staff. At least one entrance can be accessed via an underground parking garage. 
- Main article: Galaxy Garrison (Legendary Defender)
The Galaxy Garrison is a school where students learn about space travel.
- The Galaxy Garrison's main building is called the Sky Dome.
- In the Devil's Due continuity there is a governing body called the Galactic Union that sent five space explorers to Planet Arus. It is likely Galaxy Garrison with a different name, since it's stated to be Earth-based.