The Beta Quadrant is the common designation for one quarter of the Milky Way Galaxy. Its boundary in the region around the Federation is defined by a meridian passing through the galactic core and the Sol system, and continuing spinward around the galactic disc.
Both the Mutara Nebula and the Genesis Planet were located in the Beta Quadrant.
- Powers in the Beta Quadrant are often informally referred to as being part of the "Alpha Quadrant".
- The Zarnac Empire is located in the Beta Quadrant.
- I'car-saluum - the homeworld of the progenetors of the Zarnac and Baraban races - is located on the border of the Beta and Delta Quadrants.