Epsilon

;Astronomical nomenclature
* Epsilon IX sector / Epsilon sector
** Epsilon IX station
*** Epsilon IX station personnel
** Epsilon Pulsar Cluster 
* Epsilon 119, a star
* Epsilon Ashanti III
* Epsilon Boötis, a star system
* Epsilon Canaris, a star
** Epsilon Canaris III, an inhabited planet
* Epsilon Ceti B, a star
* Epsilon Eridani, a star
* Epsilon Gruis, a star system
* Epsilon Hydra VII, an inhabited planet
* Epsilon Hydrae, a star
** Epsilon IV, a planet
* Epsilon Indi / Epsilon Indi system
** Epsilon Indi II, an inhabited planet
** Epsilon Indi IV, an inhabited planet
* Epsilon Legato, a star
* Epsilon Librae, a star system
* Epsilon Monocerotis, a star system
* Epsilon Mynos system
* Epsilon Nel system
** Epsilon Municipality
* Epsilon Ophiuchi, a star system
* Epsilon Pavonis, a star system
* Epsilon Phoenicis, a star system
* Epsilon Scorpii, a star system
* Epsilon Serpentis, a star system
* Epsilon Silar system
* Epsilon West IV, an inhabited planet
* Epsilon Wiltz IV, an inhabited planet
* Psi Epsilon III, an inhabited planet
* Psi Epsilon IV, an inhabited planet
;Science and technology
* Epsilon Outposts
** Epsilon Outpost 1
** Epsilon Outpost 2
** Epsilon Outpost 3
** Epsilon Outpost 4
** Epsilon Outpost 5
** Epsilon Outpost 6
** Epsilon Outpost 7
** Epsilon Outpost 8
** Epsilon Outpost 9
** Epsilon Outpost 10
** Epsilon Outpost 11
* Epsilon radiation
* Spiroid epsilon wave
;Terminology
* "Corridor H -6, Section 27 Epsilon", location of quarters on Deep Space 9
* "Epsilon 2", a comm frequency
* "Epsilon 7-9-3", Picard's command code
* "Kirk Epsilon", a Starfleet evasive maneuver
* "O'Brien-Epsilon-Alpha-Molly 5-7-9", O'Brien's command code
fr:Epsilon