Starbase 153 was a Federation starbase administered by Starfleet.

In 2365, this base launched a modified class-8 probe, with special emissary K'Ehleyr inside, for a critical rendezvous with the USS Enterprise-D in 2365. It did so because other transportation was not available and time was of the essence. (TNG: "The Emissary")

In 2374, during the Dominion War, this base reported numerous casualties to Starfleet Command. The casualties were Rick Bittle, Margaret Clark, Barbara Covington, Curt Danhauser, Laura Derr, Dorothy Duder, Russ English Terry Erdmann, Ann Flood, John Fredrickson, Alice Ginsburg, Kurt Hansen, Teri Hansen, and Matata Kimya. The name of the reporting base and the casualties were listed in the wardroom of Deep Space 9. (DS9: "In the Pale Moonlight", okudagram)

According to Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), Starbase 153 was located in the Beta Quadrant.
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