Starbase 81 was a Federation starbase facility in Starfleet service in the 24th century, located somewhere in the galaxy's Alpha or Beta Quadrant.
History and specifics[]
In the year 2367, the commanding officer of Starbase 81 was Vice Admiral Yuri Kuznetsov.
In that year, the starship USS Enterprise-D visited Starbase 81, where it picked up former USS Stargazer crewmembers Carter Greyhorse, Phigus Simenon, and Idun Asmund, en route to Daa'V. (TNG novel: Reunion)