- Protectors
- Proteus
- Proteus (Human)
- Proteus (myth)
- Proteus system
- Protocol officer
- Protof
- Protomatter
- Proton
- Proton bomb
- Proton pump inhibitor
- Protonotarios
- Protoplaser
- Protoplasm
- Protostar
- Protostar class
- Protostellar nebula
- Prototaxites stellaviatori
- Prototype
- Prototype (episode)
- Proud Helios
- Provenance of Shadows
- Providence
- Providence III
- Providence Planetform Research Team
- Providence system
- Providers
- Province
- Provinces
- Proving Ground
- Provisional officer
- Provost
- Provost marshal
- Provost of the Vulcan Science Academy
- Proxcinian
- Proxima
- Proxima (disambiguation)
- Proxima Alpha
- Proxima Beta
- Proxima Canaris
- Proxima Centauri (planet)
- Proxima Centauri I
- Proxima Centauri I-A
- Proxima Centauri II
- Proxima Centaurian
- Proxima Colony
- Proxima Maintenance Yards
- Proxima News Service
- Proxima Station
- Proxima class
- Proximan
- Proximan Police Department
- Proximian
- Proximity detector
- Proxman
- Proxman III
- Proxus
- Prozac
- Prozhoti
- Prrghh
- Prune juice
- Prusah kisan
- Prussura IV
- Pryblade
- Prylar
- Prynn Tenmei
- Prynn Tenmei (mirror)
- Prynok Crell
- Psi
- Psi-clone
- Psi20
- Psi 2000
- Psi Aurigae
- Psi Cancri
- Psi Phi Awards
- Psi Serpentis
- Psi Tauri
- Psi Velorum
- Psi Velorum sector block
- Psi rating
- Psilocybe baeocystis
- Psilocybe pelliculosa
- Psilocybe silvatica
- Psilosynine
- Psionic amplifier
- Psionic cult
- Psionic technology
- Psionic weapon
- Psychiatric facility
- Psychiatry
- Psychoactive drug
- Psychohistory
- Psychokinesis
- Psychology
- Psychology Division
- Psychoprofile
- Psychoscan
- Psychotricorder
- Psyll
- Ptah
- Ptalleus
- Ptarmigan
- Ptarvo fever
- Pterodactyl
- Pterosaur
- Ptol
- Ptolemy (disambiguation)
- Ptolemy class
- Puberty
- Public Defender
- Public Enemies, Private Lives
- Public Enemies, Private Lives, Conclusion
- Public Enemies, Private Lives (story arc)
- Public School 29
- Public address
- Public announcement system
- Public relations officer
- Puck
- Puckee
- Pudding
- Puder bean
- Pueblo
- Pueblo Revolt
- Puerto Rico
- Puerto Vallarta
- Pug
- Pug Joseph (mirror)
- Pugabeast
- Puget Sound
- Pukier
- Puklik
- Pulaski
- Pulaski (disambiguation)
- Pulaski 2.0
- Pulitzer Prize
- Pullock
- Pullock III
- Pullock V
- Pulo
- Pulol
- Pulsar
- Pulsar (disambiguation)
- Pulsar class
- Pulsar cluster
- Pulse cannon
- Pulse grenade
- Pulse mine
- Pulse phaser
- Pulse wand
- Pumpkin
- Pumpkin bread
- Pumpkin pie
- Pumum
- PumwI' class
- Punch Through the Federation Blockade
- Pung'e
- Punic Wars
- Punic region
- Puniex
- Punishment
- Punitis
- Punjab
- Punk on the bus
- Punta Mulas
- Pup
- Puppet
- Puppis
- Purcell
- Purcell (disambiguation)
- Purdi
- Purdi's Book Emporium
- Purdy
- Purgatory
- Purgatory's Key
- Puri
- Puriaz
- Puriaz I
- Puriaz II
- Puriaz III
- Puriaz IV
- Puriaz V
- Purification squad
- Puris
- Purists
- Purists (Trill)
- Purlii
- Purple Orion
- Purple Sonja
- Purpose as Prime Motivator
- Pursuit 1
- Pursuit 3
- Pursuit 4
- Pursuit 7
- Pursuit group
- Puss-in-Boots
- Puss in Boots
- Putak
- Putak VIII
- Puxam
- Puxas
- PuyDete
- PuyDete I
- PuyDete II
- PuyDete III
- PuyDete IV
- PuyDete IV-A
- Puyjaq class
- Puzub
- Puzzles
- Pvath
- Pygmy sperm whale
- Pygorian
- Pygram
- Pylchyk
- Pylghht
- Pyllora
- Pyotr Velikiy class
- Pyra
- Pyramid
- Pyrellia
- Pyrellia (planet)
- Pyrellian ginger tea
- Pyren
- Pyrenees
- Pyrenees class
- Pyrimiis
- Pyrimiis I
- Pyrimiis II
- Pyrinthian
- Pyrinthian blacto weed
- Pyris
- Pyris (disambiguation)
- Pyris VII
- Pyrithia
- Pyrithian bat
- Pyrocyte
- Pyrotechnic
- Pyrrhic victory
- Pyrrhoneuritis
- Pyskof
- Pythagoras (disambiguation)
- Pythagos Clans
- Pythas Lok
- Pythas Lok (mirror)
- Pytheas
- Pythus class
- Pyurb
- Pyxian
- Pyxlanan puzzle
- Q
- Q&A
- Q'Idar
- Q'Lujj
- Q'Maire
- Q'Maire class
- Q'Nel
- Q'Tahl
- Q'Tahl system
- Q'an Vass
- Q'babi juice
- Q'lava
- Q'o'l'r't'r'e'z'a'k
- Q'parol
- Q'ratt
- Q's Day
- Q's Guide to the Continuum
- Q's Winter Wonderland 2019!
- Q'uonek
- Q-Continuum
- Q-Less
- Q-Space
- Q-Squared
- Q-Strike
- Q-Zone
- Q-in-Law
- Q-ship
- Q2
- Q2 (episode)
- Q2 Brown
- Q6262
- QI'tu'
- QIS
- Q & A
- Q (Junior)
- Q (mirror)
- Q Affects!
- Q Are Cordially Uninvited
- Q Continuum
- Q Factor
- Q Incident
- Q Who
- Q and False
- Q and False and Other Stories
- Q weapon
- Qa'HoS
- Qa'HoS class
- Qa'Hos
- QaDrav
- QaS DevwI'
- Qabara
- Qabiyii
- Qabjech Exploratory Fleet
- Qaitos
- Qaitos VI
- Qal'at
- Qaletaqu
- Qam
- Qam-Chee
- Qam-Chee River
- Qandis
- Qang class
- Qao
- Qaolin
- Qapla'
- Qaris
- Qarmduct
- Qasma
- Qat'qa
- Qat Zaldana
- Qatarak
- Qav'loS sector
- Qavim
- Qavok
- Qavok prince's yacht
- Qaw'Dun class
- QawHaq'hoch
- Qaylan Furlong
- Qayngo
- Qayngo I
- Qayngo II
- Qe'tran colony
- QeHpu' class
- Qeh'Ral class
- Qellion
- Qelta
- Qena
- QepIng
- QepIng I
- QepIng II
- QepIng III
- QepIng IV
- QepIng IV-A
- Qesar
- Qetezog
- Qevuy