"The Trouble with Tribbles" was the 42nd episode of Star Trek: The Original Series, the 13th episode of the show's second season, first aired on 29 December 1967. The episode was written by David Gerrold, directed by Joseph Pevney and novelized in Star Trek 3 by James Blish.



Episode charactersEdit

Nilz BarisPavel ChekovFitzpatrickJerry FreemanDavid Galloway (?) • GralmekBill HadleyCyrano JonesJames T. KirkKoloth, son of LassharKoraxRoger LemliRyan LeslieJohn LurryWalt MathisonLeonard McCoyWade MoodyMontgomery ScottSpockNyota UhuraVinci (?) • tribblesunnamed Humansunnamed Starfleet personnel (Starfleet personnel) • unnamed 2260s USS Enterprise personnel (USS Enterprise personnel)
Referenced only 
John BurkePeter the Great

Novelization charactersEdit

Nilz BarisPavel ChekovJerry FreemanGralmekCyrano JonesJames T. KirkKoloth, son of LassharKoraxJohn LurryLeonard McCoyMontgomery ScottSpockNyota UhuraVincitribbles

Starships and vehiclesEdit

USS Enterprise (Constitution-class heavy cruiser) • IKS Gr'oth (D7 class battlecruiser)


Deep Space Station K-7 (the galaxy's Beta Quadrant)
Referenced only 
Sherman's Planet (the galaxy's Beta Quadrant) • Canada, Russia (Earth, Sol system, sector 001, (the galaxy's Alpha Quadrant)

Shipboard areasEdit

USS Enterprise 

Races and culturesEdit


Technology and weaponsEdit

intercommedical tricordersensorsstarshipviewscreentransportertricorder

Materials and substancesEdit



quadrotriticaletriticaleRegulan bloodwormtribble

States and organizationsEdit

FederationStarfleetKlingon High CommandStarfleet Command

Ranks and titlesEdit

admiralassistantbureaucratcaptainchief engineerchief medical officercommandercommanding officercommunications officerdoctorengineerFederation Starfleet ranksFederation Starfleet ranks (2260s)first officerlieutenantlieutenant commanderhelmsmanmedical practitionernavigatorofficerscientistscience officersecond officertactical officerUndersecretary for Agriculture

Other referencesEdit

Argilian flame gemchicken sandwichcoffeecreditdistress callEartherOrganian Peace TreatySirian glow watersystem locatoranatomyarmbeamingbirthrateBonesbootcaptain's logcaptain's log, USS Enterprise, 2268clothingdressfingerfive-year missiongovernmenthomeworldhumanoidjumpsuitlanguagelifeformlog entrylogicmattermemoryearnation-stateorbitpantsplanetpopulationquadrantraces and culturesrankregulationsandwichspacestarstar systemstardateStarfleet uniformStarfleet uniform (2260s)technologytitletreatytunicuniformuniversevirusweapon


stardate 4523.3, 2267 (2260s chronology, 2264–2270 Enterprise voyages
Enterprise travels to K-7.


Related mediaEdit

Video releasesEdit



Episode imagesEdit

Adaptation imagesEdit



published order
Previous episode:
I, Mudd
TOS episode produced Next episode:
Bread and Circuses
Previous episode:
Wolf in the Fold
TOS episode aired Next episode:
The Gamesters of Triskelion
Previous story:
first in book
Star Trek 3
Next story:
The Last Gunfight
chronological order
Previous Adventure:
Beneath the Skin
pages 12-19
Memory Beta Chronology Next Adventure:
Trials and Tribble-ations
Previous Adventure:
The Galactic Whirlpool
Pocket Next Adventure:
Trials and Tribble-ations
Previous Adventure:
The Galactic Whirlpool
Voyages of the
USS Enterprise (NCC-1701)
(2264 to 2270)
Next Adventure:
Beneath the Skin

External linksEdit

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