Beta Zeta
Beta Zeta was an inhabited planetary system in the Alpha Quadrant. One of its planets was Betazed, the homeworld of the warp-capable Betazoids. In the late 2250s, this species had or was in the process of being inducted into the .

In 2259, the location of this system was labeled on a stellar cartography chart that was seen on the 's ready room viewscreen. This system's symbol had a blue color, indicating that it was affiliated with the . () 

In 2399, the location of Beta Zeta was labeled in a Federation star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters. This system was in or near to Federation space. () 

Star systems