D'akturak
d'blok
D'deridex-class warbird
D'jarra
d'k tahg
D'Kyr
D'Vahl
dabo
dabo girl
dabo table
dabo wheel
Dahar Master
Dahkur Hills
Dahkur Province
Dachlyds
DaiMon
Dakala
Dakeen Monastery
Daled IV
Dalvos Prime
damage control procedures
damage control team
dampening field
damping field
Danube-class runabout
Danula II
Daran V
dark energy
dark matter
dark matter nebula
Dark Time, Klingon
Darnay's disease
Darwin Genetic Research Station
data buffer
data clip
data crystal
dataport
DaVinci Falls
Dayos IV
Daystrome Institute of Technology
de Laure Belt
de-embarkation logs
Deadalus-class starship
deck 1
decompression chamber
decon-gel
decontamination gel
Decos Prime
Deep Space 5
Deep Space 9
Deep Space Station K-7
defense condition one
Defiant-class starship
Defiant, U.S.S.
Defiant, U.S.S. (2)
deflector
deflector array
deflector dish
deflector grid
deflector shields
deflectors
Degebian mountain goat
Degora Street
Deirdre, S.S.
Deka tea
dekyon
Delgorian locking mechanism
Delos system
Delovian souffle
Delphi Ardu
Delphic Expanse
Delta Flyer
Delta IV
Delta Quadrant
delta radiation
Delta Rana IV
Delta Rana star system
Delta Vega
delta wave inducer
Deltans
Deltived Asteroid Belt
Delvok
dematerialization
Demilitarized Zone
Demons of Air and Darkness
Deneb II
Deneb IV
Deneb V
Denebian slime devil
Denebians
Deneva
Denevan crystals
Denevan neural parasite
Denevan ship
Denius III
denkirs
Denobula
Denobulan Science Academy
Denobulans
Denorios Belt
Denubian Alps
Department of Cartography
dermal regenerator
dermal residue
dermaline gel
Derna
desealer rod
Destiny, U.S.S.
destruct sequence
Detapa Council
deuterium
deuterium control conduit
deuterium infusion sequence
deuterium injector
deuterium tank
Devil
Devos II
Dewans
diagnostic
diamagnetic storm
diburnium
diburnium-osmium alloy
dicobalt explosives
dicosilium
differential magnetometer
digger
dikironium cloud creature
dilithium
dilithium crystal
dilithium crystal articulation frame
dilithium crystal chamber
dilithium hydroxals
dilithium chamber hatch
dilithium matrix
Dimorus
Dinasians
direct reticular stimulation
direct transport
directional sonic generator
discommendation
dispersion field
Disrupters
disruptor
disruptors, system 5
distortion field
distress beacon
distress call
distress signal
ditanium
Dividices, I.R.W.
Divine Treasury
Division of Planetary Operations
DMZ
DNA resequencing
docking bay
docking clamps
docking port
docking ring
Dohlman of Troyius
dom-jot
Dominion
Dominion battleship
Dominion internment camp 371
Dominion War
Dominion-Breen Alliance
Donatu V
Donatu V, Battle of
door in the universe
Dopa system
Dorala system
Dorek syndrome
dorsal
Dosi
Douwd
Down the River Light
Dozaria
Drafting Room 5
drag coefficient
Drake, U.S.S.
Drayjin
Draylan
Draylax
Draylon II
Drema IV
Dremans
Dreon VII
drill thralls
driver coil
driver coil assembly
Drovna, I.K.S.
drydock
dryworm
Du'cha
dualitic inverter
Dunes
dunsel
duonetic coupler
duonetic field
duotronics
duranium
duratanium
duridium alloy
DY-100
DY-500
dynametric array
dynoscanner
Dyson Sphere
Dytallix B