Kappa

;Astronomical nomenclature
* Kappa Coronae Borealis, a star system
* Kappa Delphini, a star system
* Kappa Fornacis, a star system
* Kappa Ophiuchi, a star system
;Classifications
* "Kappa-alpha-4-6-0-1-7-0-4", assigned to Ambassador T'Pel
* "Kappa 0-1-0", a Starfleet attack maneuver
;Starships
* , a frigate that served the Confederation of Earth during the early 25th century
fr:Kappa