- Planet Killer (comic)
- Planet Q
- Planet X
- Planet X (disambiguation)
- Planet X (planet)
- Planet of Fire
- Planet of Galactic Peace
- Planet of Judgment
- Planet of No Life
- Planet of Rejects
- Planet of the Apes
- Planet of the Dead
- Planet qetlh'agh I
- Planet qetlh'agh II
- Planet qetlh'agh III
- Planet qetlh'agh IV
- Planet qovo I
- Planet qovo II
- Planet qovo III
- Planet qovo IV
- Planet qu'neD I
- Planet qu'neD II
- Planet qu'neD III
- Planet qvaQ I
- Planet qvaQ II
- Planet qvaQ III
- Planetarist movement
- Planetary Adventures
- Planetary Contingency Code
- Planetary Defense Command
- Planetary Injection Control
- Planetary Regiments
- Planetary Security
- Planetary Society
- Planetary core
- Planetary trade profile
- Planetfall
- Planetoid
- Planetquake
- Planets and planetoids
- Planets of the UFP
- Planfa
- Plank owner
- Plankton
- Plankton harvester
- Plant
- Plant species (K-G)
- Planx
- Plardos Yardin
- Plaser
- Plasma
- Plasma bomb
- Plasma burn
- Plasma cannon
- Plasma charge
- Plasma coolant
- Plasma coupling
- Plasma diverter
- Plasma grenade
- Plasma injector
- Plasma manifold
- Plasma pistol
- Plasma plumber
- Plasma relay
- Plasma rifle
- Plasma storm
- Plasma streamer
- Plasma thrower
- Plasma torch
- Plasma torpedo
- Plasma weapon
- Plasmatic pulsar device
- Plasta lamination
- Plasteel
- Plastic
- Plastiform
- Plastisteel
- Plastoid
- Plastowel
- Plasus
- Plasus (mirror)
- Plateau Mont-Royal
- Plateau of Drul
- Plateau of Tai-la
- Platinum
- Plato
- Plato's Stepchildren
- Plato (disambiguation)
- Plato (mirror)
- Platonis
- Platonius
- Platte
- Platypus
- Play
- Player's Guide
- Playing God
- Playing card
- Playstation
- Playwright
- Plaza
- Plaza of Freedom
- Plaza of the Endless Sky
- Plea for the Dead
- Pleasance
- Pleasance's creature
- Pleasure maze
- Pledora
- Pledzur Helfram
- Pleeka
- Pleeka rind
- Plegg
- Plegu
- Pleiades Cluster
- Plek-rath
- Plemox
- Plen Zha class
- Plenary Council
- Pleroma, Part 1
- Plesetsk Cosmodrome
- Plesh Brek class
- Plesio
- Pleth'ra
- Plexican
- Plexiglass
- Plexisteel
- Pley'ta
- Pliable Truths
- Plikin
- Plin Patra
- Plisagraph
- Plixes
- Plomeek
- Plomeek soup
- Plot-It-Yourself Adventure Stories
- Plot-Your-Own Adventure Stories
- Pltzvltz
- Pluboi
- Plum
- Plume dancer
- Plummer
- Plunderer
- Pluro
- Plush Princess
- Plutarch
- Pluto
- Pluto's Inn
- Pluto Station
- Plutonian snow-beaver
- Plutonium
- Pluuh II
- Pluvoid
- Pluzx
- Plyathhapbast
- Plymouth Rock
- Plyst Hopsth
- Plytth
- Pneumonia
- Po
- Po'mek
- PoSbIQ'a' Ocean
- Po (Andorian)
- Po (Lieutenant)
- Po (disambiguation)
- Po werm
- Pochar
- Pochian
- Pochian system
- Pocket Books
- Pocket Books offices
- Pocket universe
- Pod
- Pod Mother
- Podaris sector
- Poden
- Podolsk
- Poem
- Poet
- Poet (Azziz)
- Poet (Human)
- Poet (profession)
- Poetry
- Pogar City
- Pogh'oy
- Pogh'oy I
- Pogh'oy II
- Poincaré
- Poinciana tree
- Point Bonita Lighthouse
- Point defense phaser
- Point of Divergence
- Point of Light
- Pointer
- Pointer (disambiguation)
- Poison
- PojjanPiraKot
- Pojjana
- Pojjima
- Pojra
- Pok
- Pok, son of Torghn
- Pokano
- Poker
- Poketa
- Pol
- Pol'tara
- Pol'vadi
- Pol Krinn
- Pol Pot (mirror)
- Pol Straken
- Pol kj Onn
- Pola
- Poland
- Polar (NCC-92317/01)
- Polaris (disambiguation)
- Polaris class
- Polarized hull plating
- Polaron
- Polaron pulse pistol
- Polaron pulse rifle
- Polaron torpedo
- Polaron weapon
- Polatta
- Polcovich
- Police
- Police chief
- Police cruiser
- Police frigate
- Police web
- Polidex
- Polin
- Polio
- Polira
- Political Party
- Pollack
- Polladori 1
- Pollard (disambiguation)
- Pollock
- Pollox
- Pollox IV
- Pollus
- Pollution
- Pollux
- Pollux (Wizard)
- Pollux (disambiguation)
- Pollux II
- Pollux III
- Pollux IV
- Pollux V
- Pollux class
- Polluxara
- Polly Luttrull
- Polly Parks
- Polly Watson (Chief)
- Polo's Bolos
- Polonium
- Polonius
- Poltergeist 1
- Polyalloy
- Polycephaly
- Polydorus
- Polyduranide
- Polyduranium
- Polymax
- Polymax VIII
- Polymer
- Polysilicate verterium
- Polywater
- Pomapoli
- Pompeii
- Pompeii (disambiguation)
- Pomplance
- Pomplancian Bureau of Interstellar Affairs
- Pomplancian Off Planet Mission
- Pon Far!
- Pon farr
- Ponea
- Ponn-ifla
- Ponor
- Ponor (mirror)
- Ponor System Patrol
- Pontalimus
- Pontifex Maxima of the Holy Order of the Kinshaya
- Pontikanos
- Pontilus
- Pontix
- Pony
- Pony Express
- Ponytail
- Ponzox
- Pooae
- Pool of Prophecy
- Pool table
- Pooncheen
- Pooncheenee
- Pooper-scooper
- Pop
- Pop-Up
- Pop Goes the Weasel
- Pop lizard
- Popcorn
- Pope
- Poplar tree
- Popodoopopop
- Popsicle
- Popsnail
- Popé
- Popé Boulevard
- Popé Pueblo
- Poq'oq
- Poq'oq I
- Poq'oq II
- Poq'oq III
- Poq'uch
- Poq'uch I
- Poq'uch II
- Poq'uch III
- Poq'uch III-A
- Poquette
- Por-prenicle
- Porabon
- Porakas
- Porakas system
- Porcin' Chikto
- Porcion
- Porfirio
- Pork'n'beans
- Porli
- Pornography
- Porpoise
- Porridge
- Porrima
- Porrima V
- Porsuk
- Port
- Port Emily
- Port Horrtha
- Port Shangri-La
- Port Shangri-La Seagulls
- Port lssara 1
- Port master
- Port of P'nam
- Porta
- Portable antigrav
- Portable emitter