Dax
Dax could refer to:

Individuals
 Dax (Crewman), an alien Starfleet crewmember aboard the USS Enterprise-A
 Dax (symbiont), the Trill symbiont hosted by several Trill, including Jadzia and Ezri
 Dax, son of Kang, named for Curzon Dax, and born in the late 23rd century

Real world
 , the first-season DS9 episode

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