A&A officer
ablative armor
absorbed
absorption chamber
academy commandant
accelerated critical neural pathway formation
access terminal
access tunnel
acetylcholine
acting captain
active-scan navigation
adanji
adaptive interface link
Adarak Prime
adenine
Adigeon Prime
Advanced Tactical Training
Agaron
Age of Ascension, Klingon
Age of Inclusion, Klingon
Agents 201 and 347
ages of Tkon
agonizer
agony booth
Agosoria
ahdar
ahn-woon
air tram
airlock
airponics bay
Ajilon Prime
Ak'la bella doo
Ak'voh
Akaali
Akagi, U.S.S.
Akira-class starship
Alameda
Albeni meditation crystal
Alcyones
Aldea
Aldeans
Aldebaran
Aldebaran Music Academy
Aldebaran serpent
Alfa 117
algae paste
Algeron IV
Algeron, Treaty of
Algorian mammoth
Alice in Wonderland
allasomorph
Alliance
Alliance for Global Unity
Alpha Carinae II
Alpha Carinae V
Alpha Centauri
Alpha III, Statues of
Alpha Jem'Hadar
Alpha Majoris I
Alpha Proxima II
Alpha Quadrant
Alpha V Colony
alpha wave inducer
Altair III
Altair sandwich
Altair VI
Altair water
Altarian Conference
Altarian marsupial
Altec
Alterian chowder
alva
Alvanian beehive
Alvanian brandy
Alvanian cave sloth
Alvanian spine mite
Alverian dung beetle
Alvinian melons
Amar, I.K.S.
Amargosa
Amargosa Observatory
Amazon University
Ambassador-class starship
Amleth Prime
amoeba
amusement park planet
anaerobic metabolites
Anbo-jytsu
Anchilles fever
ancient bajoran language
Andonian tea
Andor
Andoria
Andorian Academy
Andorian Agriculture Ministry
Andorian Empire
Andorian glass bead
Andorian Imperial Guard
Andorian redbat
Andorian transport
andorian tuber root
Andorian zabathu
Andorians
android
Andromeda Galaxy
Andronesian encephalitis
Andros III
anesthizine
Angel One
annual physicals
annular confinement beam
anodyne circuit
Anslem
Antarans
Antarean brandy
Antares, U.S.S.
Antarian glow water
Antede III
Antedean ambassador
Antedeans
anthracite strike of 1902
anti-back flow valve
anti-intoxicant
anti-personnel mine
anti-time
Antica
Anticans
antigrav
antigraviton
antigraviton beam
antimatter
antimatter containment
antimatter containment breach
antimatter containment failure
antimatter containment field
antimatter containment pod
antimatter flow convertor
antimatter injector
antimatter mines
antimatter pod
antimatter spread
antimonium
antiproton
Antos IV
Antwerp Conference
anydone capacitor
AR-558
Arachnid Nebula
Arawath Colony
arbiter
Arbiter of Succession
arch
Archanis
Archanis IV
archon
Archon, U.S.S.
Archons
arcybite
Ardana
Ardanan shuttle
Arfillian ficus
Argelians
Argelius
Argolis Cluster
argonite
Argratha
Argrathi
Argus River region
Ariannus
Aries, U.S.S.
Arkonians
Arloff IV
Armens, Treaty of
armory
Armstrong Park
Armstrong, Lake
Armstrong, U.S.S.
Armus IX
Arneb
array
Arsenal of Freedom
Artemis, S.S.
Articles of Jurisprudence
artificial gravity grid
artificial wormhole
Arvada III
asometric photon
asporanine
Assay Office
assignment
astatine
asteroid belt
asteroid field
Astral Queen
Astrometrics
asymmetric encryption circuit
atavachron
Atbar Prime
Athas IV
Athos IV
Atifs IV
atmospheric dissipation
attack pattern
attack skimmer
AU
audet IX
Audubon Park
Aurora
autodestruct sequence
automatic flight control
automatic helm control
autoshutdown sequence
auxiliary control
auxiliary power
Avenal system
Avenal VII
Avidyne engines
away mission
away team
Axanar
Axanars
axionic chip network