Risa

A

Abadeen

Acamar III

Adara - Class Y planet in the Delta Quadrant featured in the ''Voyager'' episode " Flesh And Blood ".

Adarak Prime - Dominion weapons depot featured in the DS9 episode " When It Rains... "

Adelphous IV - planet featured in the TNG episode " Data's Day ".

Adigian Prime

Agalon Prime

Agaron

Agosoria

Akaali - also called Omega Sagittarii III

Akrayde VII

Akritiri

Alastria

Aldea - also known as Epsilon Mynos, is a mythological planet featured in the TNG episode " When The Bough Breaks ". The planet reveals itself to the crew of the ''Enterprise''-D who discovers the ancient society is dying.

Aldebaran - planet mentioned in the TOS episode " Where No Man Has Gone Before "

Aldebaran III - mentioned in the TOS epsisode " The Deadly Years ".

Aldron IV

Algeron - planet within the Romulan Neutral Zone. It is where the Treaty Of Algeron was signed where the Federation agreed with the Romulans to never to develop Cloaking Device technology.

Algitark

Alpha 117 - a Class M planet featured in the TOS episode " The Enemy Within ", where a transporter malfunction causes the creation of a duplicate Captain Kirk with evil tendencies.

Alpha V - a human colony world mentioned in the TOS episode " Charlie X ". Charlie had relatives living there.

Alpha Carinae V - a planet mentioned in the TOS episode " The Ultimate Computer ". The planet was surveyed by the M5 computer during trial runs.

Alpha Eridani II - a Federation colony mentioned in the TOS episode " Wolf In The Fold ". The planet's main city is Heliopolis.

Alpha Majoris I - planet mentioned in TOS episode " Wolf In The Fold ".

Alpha Moon - featured in the TNG episode " The Host ".

Alpha Onias III - featured in the TNG episode " Future Imperfect ".

Altair - system with numerous planets featured in the ''Star Trek'' series.

Altair III - mentioned in the TNG episode " Encounter At Farpoint ".

Altair IV - featured in the DS9 episode " Prophet Motive "

Altair VI - a Federation colony mentioned in the TOS episode " Amok Time ".

Altec - also known as Omega Sagitta, featured in the TNG episode " The Outrageous Okona ".

Altoor VII

Amargosa - star system with a Federation research station that was attacked by the Romulans in their attempt to acquire a trilithium weapon. It was featured in the movie ''''. The Amagosa star was destroyed by the renegade scientist Dr. Tolian Soran, in his attempt to change the course of the Nexus energy ribbon.

Amleth Prime

Anara Prime

Andor - or also called Andor or Procyon VIII, homeworld of the Andorian species.

Angel One - a planet dominated by women who treat the men of their culture as property. It was featured in the TNG episode " Angel One ".

Angosia III - featured in the TNG episode " The Hunted ".

Antares IV

Antide III - featured in the TNG episode " Manhunt ". It is home to the ichthyohumanoid species Antedeans , a member of the UFP.

Antos IV - planet mentioned in the TOS episode " Whom Gods Destroy ". It is inhabited by a shape-shifting race.

AR-558

Arakang VII - featured in the DS9 episode " Q-Less .

Archanis IV - featured in the DS9 episodes " The Die Is Cast " and " Broken Link ".

Archer's Planet - planet named for Captain Jonathan Archer which lies in the Gamma Trianguli system, featured in the ''Enterprise'' episode " In A Mirror, Darkly " Along with Archer IV it is one of two planets named after Jonathan Archer - the 22nd century Captain of the '' Enterprise NX-01 ''.

Archer IV - planet in the 61 Ursae Majoris system mentioned in the TNG episode " Yesterday's Enterprise ". It is a Class-M planet with a population of nearly 700 million. Archer IV is one of two planets named in honor of Captain Jonathan Archer who was Captain of the 22nd century '' Enterprise ''. The planet was home to a pollen that contained the toxin tropolisine, which caused paranoid delusions among the first group to visit the planet, and with prolonged exposure, caused death if not treated. The planet was not suitable for human colonization until the early 23rd century, when the pollen was finally eliminated.

Ardana - or Mu Leonis A III, is a planet featured in the TOS episode " The Cloud Minders ". The planet's society is split between the elite class who reside in luxurious floating cities, and the lower class "Trogdoylites" who are forced to work in dangerous mines on the surface.

Argellius II - a planet visited by the USS ''Enterprise'' in the TOS episode " Wolf In The Fold " that has a middle-eastern cultural influence.

Argus X - planet mentioned in the TOS episode " Obsession ".

Argratha - Gamma Quadrant planet featured in the DS9 episode " Hard Time ".

Arianus - planet mentioned as the destination of the USS ''Enterprise'' in the TOS episode " Let That Be Your Last Battlefield ".

Arlof IX - planet mentioned in the TNG episode " The Neutral Zone ".

Armus IX - a Federation world with a Starbase. It was mentioned in the TNG episode " Datalore ".

Arret - planet featured in the TOS episode " Return To Tomorrow ".

Ashalon V - Cardassian world with a fuel depot featured in the DS9 episode " "Dreadnought ".

Atalia VII - planet featured in the TNG episode " The Chase ".

Atbar Prime

Athos IV - planet featured in the DS9 episode " Blaze Of Glory ".

Atrea IV - planet featured in the TNG episode " Inheritance ".

Audet IX - planet mentioned in the TNG episode " The Child ".

Avenal VII

Axanar - star system mentioned in the TOS episode " Whom Gods Destroy ".

Azati Prime - Xindi colony featured in the ''Enterprise'' episodes " Azati Prime " and " Stratagem ". It is located inside the Delphic Expanse . A Xindi colony of primates resided there at one time, and it was the site for the construction of a Xindi weapon of mass destruction.

B

B'Saari II - planet featured in the ''Enterprise'' episode " Horizon ".

Babel - a neutral world mentioned in the TOS episode " Journey To Babel " and was designated as the site of the Babel Conference to discuss the admission of the Coridan system into the Federation. It is also mentioned in the ''Enterprise" episode " Babel One ".

Bajor - homeworld of the Bajoran people located in the B'hava'el system. The system is known for its Bajoran Wormhole which provides access to the Gamma Quadrant. The space station Deep Space Nine orbits near the Bajor system.

Ba'ku - a beautiful ''. The planet resides in the dangerous Briar Patch Nebula, and is surrounded by a ring of energy with bizarre regenerative powers. The crew of the ''Enterprise''-E discover a renegade Federation Admiral has made dealings with the Sona race to extract energy from the ring which could destroy all life on the planet.

Balisty - featured in the DS9 episode " The Nagus ".

Banea

Barisa Prime

Barkon IV - featured in the TNG episode " Thine Own Self ".

Barradas III - featured in the TNG episode " The Emissary "

Barson II - featured in the TNG episode " Eye Of The Beholder ".

Barzan II - featured in the TNG episode " The Price ".

Belos - featured in the ''Voyager'' episode " Critical Care ".

Bentha - also called Benthos, planet featured in the ''Voyager'' episode " Vis A Vis ".

Benzar - planet mentioned in the TNG episode " Coming Of Age ".It is the homeworld of the aquatic Benzenite species. This planet's first appearance was in the TNG episode " A Matter Of Honor ". It is described as a starkly beautiful world with an atmosphere high in gaseous Ammonia and low in Oxygen . Elaborate crystalline rock structures dominate its landscape. Benzar has an atmosphere similar to Class M norms, but contains a mixture of gases unique to the planet. Most humanoid species could not survive here without life-support suits or domed structures with oxygen-rich atmospheres.

Beranis III

Berengaria - featured in the DS9 episode " In The Cards ".

Bersallis III - featured in the TNG episode " Lessons ".

Beta - a star system with numerous planets that have been featured in the ''Star Trek'' series.

Beta III is a planet featured in the TOS episode " The Return Of The Archons " where the populance is discovered to be ruled by a mysterious computer.

Beta VI is a Federation colony world mentioned in the TOS episode " The Squire Of Gothos " that was the destination of the USS ''Enterprise'' before the Trelane entity acosted the command crew for his entertainment.

Beta XII-A was visited by the USS ''Enterprise'' in the episode " Day Of The Dove " where the human colony was destroyed by an alien entity that fed off fear and aggression.

Beta Agni II - featured in the TNG episode " The Most Toys ".

Beta Moon - featured in the TNG episode " The Host ".

Beta Portalin - a Federation colony mentioned in the TOS episode "".

Beta Renner - a star system mentioned in the TNG episode " Lonely Among Us " that has two inhabited planets; the homeworlds of the felinoid Antican and reptillian Salay, who are at war with each other.

Beta Thorador - mentioned in the TNG episode " Redemption ".

Betaline Kel - mentioned in the TNG episode " Redemption ".

Betazed - also called Beta Zeta V, is the homeworld of the Betazed species.

Bilana III - mentioned in the TNG episode " New Ground ".

Blue Horizon - featured in the DS9 episode " Second Sight ".

Bokara VI - featured in the TNG episode " Face Of The Enenmy ".

Bolarus IX - homeworld of the Bolian species.

Bole - Bolian planet

Bolias - planet featured in the DS9 episodes " Who Mourns For Morn? " and " Honor Among Thieves ".

Bopac III - uninhabited planet featured in the DS9 episode " Hippocratic Oath ".

Boraal II - planet featured in the TNG episode " Homeward ".

Boray

Boroth - Klingon planet featured in the DS9 episode " The Way Of The Warrior ".

Bosel Prime

Brax - planet featured in the DS9 episode " Q-Less ".

Bre'el IV - planet featured in the TNG episode " Deja Q ".

Breen - icy homeworld of the Breen species and the capital planet of the Breen Confederacy.

Brekka - a planet in the Delos star system that was featured in the TNG episode " Symbiosis ". The culture of the world was based on the production of medicine produced for their sister world of Ornara whose people suffered from a dibilitating disease.

Brentalya - planet featured in the TNG episode " New Ground ".

Browda IV - planet featured in the TNG episode " Allegiance ".

Burala Prime

Byanus - located in the Beta Magellan system, it is the homeworld of the Bynar species who have developed such an advanced symbiosis with their computer technology, they cannot survive without it. It was featured in the TNG episode " 11001001 ". A star in the Byanus system went Supernova and threatened to destroy the main computer of their world.

C

Cabral - featured in TNG episode " Homeward ".

Calder II - featured in TNG episode " Gambit, Part I ."

Caldik Prime - featured in the ''Voyager'' episode " Caretaker ".

Caldos IV - featured in the TNG episode " Sub Rosa ".

Caldonia - featured in the TNG episode " The Price ".

Calindra - Xindi controlled star system with six planets. Featured in ''Enterprise'' episodes " The Shipment ", " Proving Ground ", and " Stratagem ".

Callinon VII - planet in the Gamma Quadrant. Featured in DS9 episode " The Search, Part I ".

Canamar - penal colony world featured in the ''Enterprise'' episode " Canamar ".

Cambus - featured in TNG episode " Firstborn "

Camor V - featured in TNG episode " Bloodlines "

Campa III - featured in the DS9 episode " Defiant ".

Camus II - planet featured in the TOS episode " Turnabout Intruder " where an archeological base resides.

Capella - also called Alpha Aurigae IV, is a planet featured in the TOS episode " Friday's Child ". It is the home of the tribal Capellian people. The Federation hoped to establish relations with the natives for mining rights to their world's vast resources.

Cardassia - homeworld of the Cardassian species and capital world of the Cardassian Union.

Carraya IV - featured in TNG episode " Rightful Heir ".

Casperia Prime - featured in the DS9 episode " Change Of Heart ".

Castel I - featured in the TNG episode " Suddenly Human ".

Celais V - featured in the DS9 episode " The Adversary ".

Celek IV - featured in the ''Voyager'' episode " Critical Care ".

Celfala Prime - featured in the DS9 episode " Sanctuary ".

Celtris III - featured in the TNG episode " "Chain Of Command, Part I ".

Cerberus II - a planet mentioned in the TNG episode " Too Short A Season ". The alien culture of the world developed a "fountain of youth" serium.

Cestus III - a Federation colony planet that was attacked by the reptillian Gorn in the TOS episode " Arena ".

Ceti Alpha - a star system with two planets that have been featured in the ''Star Trek'' series.

''''' by the USS ''Reliant'' whose crew mistakes it for Ceti Alpha VI.

''''' as the chosen test site for the ''Genesis'' terraforming device. Ceti Alpha VI is discovered to have exploded several years earlier and the crew of the USS ''Reliant'' go to Ceti Alpha V by mistake.

Chalna - homeworld of the Chalnan species, mentioned in the TNG episode " Allegiance ".

Chandra V - featured in the TNG episode " Tin Man ".

Chantil III - mentioned in the TNG episode " Darmok ".

Cheron - planet mentioned in the TOS episode " Let That Be Your Last Battlefield ". The people or Cheron fought a brutal race war which eventually destroyed their entire planet.

Chin'Toka - Cardassian world featured in the DS9 episode " The Changing Face Of Evil ".

Choltok IV - Romulan research colony featured in the ''Voyager'' episode " Time And Again ".

Chya VII - planet mentioned in the TNG episode " Booby Trap ".

Cignus - featured in ''Voyager'' episode " Lifesigns ".

Cilosos III - Maquis colony featured in the DS9 episode " For The Uniform ". The atmosphere became contaminated and the planet abandoned until it was resettled by Cardassians.

Clauvdia III - planet with a hostile atmosphere with composition almost exactly similar to Daled IV. It was featured in the TNG episode " The Dauphin ". The inhabitants were shape-shifting energy beings.

Clarius - featured in DS9 episodes " The Nagus ", and " Profit And Lace ".

Colendia IV - featured in the DS9 episode " Playing God ".

Colla III - featured in TNG episode " Firstborn ".

Coltar IV - a Federation colony mentioned in the TNG episode " We'll Always Have Paris ".

Corcoroli V - planet mentioned in the TNG episode " Allegiance ".

Coridan III - featured in ''Enterprise'' episode " Shadows Of P'Jem ".

Cornelia - mentioned in TNG episode episode " Where Silence Has Lease ".

Cosla II - featured in the DS9 episode " The Alternate ".

Costalane - mentioned in TNG episode episode " Cost Of Living ".

Cravic - Delta Quadrant world visited in the ''Voyager'' episode " Prototype ".

Cyberyne - featured in the DS9 episode " The Reckoning ".

Cygex - Delta Quadrant world visited in the ''Voyager'' episode "".

Cygnet XIV - a women-dominated planet mentioned in the TOS episode " Tomorrow Is Yesterday ".

D

Dakala - featured in the ''Enterprise'' episode " Rogue Planet ".

Daled IV - planet with a hostile atmosphere with composition almost exactly similar to Clauvdia III. It was featured in the TNG episode " The Dauphin ". The inhabitants were shape-shifting energy beings.

Daran V - a Federation colony planet mentioned in the TOS episode " For The World Is Hollow And I Have Touched The Sky ". The planet was doomed to be struck by the asteroid Yonada.

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