- Pinkie Promise
- Pinky Promises
- Pirates of the Multiverse
- Piratica
- Piratica II: Return to Parrot Island
- Piratica III: The Family Sea
- Pirating Christmas
- Pixel Juice
- Più o meno
- Placid Point
- Plague Z: Last Hope - Vol. 3
- Plague Z: The Complete Collection
- Plague Z: Unseen - Vol. 2
- Plain Text
- Planet 2
- Planet Flippers
- Planet Four Fourteen
- Planet Moloch: The Guild of Unrelenting Truth
- Planet Nightmare
- Planet of Boulders
- Planet of Dread and two more stories
- Planet of the Damned
- Planet of the Gods and eight more stories
- Planet of the Love Feast
- Planet of the Supreme Predatory Octopus
- Planet Stories Super Pack #2
- Planet X vol. 1
- Planeta ascunsă
- Planeta dos mortos
- Planeta Paraiso
- Planetary Infraction
- Platform 8: The Full Omnibus
- Playground of Lost Toys
- Playing Doctor
- Playing in the Street
- Playing Solitaire and Other Stories
- Playing with Fire
- Please Don't Talk About Me When I'm Gone
- Please Rate Your Satisfaction and Other Unsettling Stories
- Plus Ten
- Pod Animity
- Pod N
- Poetic Justice
- Poetry for the Unforgiven
- Point of Origin
- Points of Departure
- Poisoned Eros: Mind-bending Tales from the Dark Side of Love
- Poker di racconti
- Pole Shifts
- Pollinations of Jardinia: Geneticist's Distraction
- Por um punhado de almas
- Porche parche
- Porn 2.0
- Portal X
- Portals
- Porter sleeps
- Possibilities
- Possibility: A SUM Inspired Story
- Possible Futures
- Possibly Nefarious Purposes and Other Stories
- Post-molecular Comfort Food
- Postcards from the Moon (A Short Story)
- Potpourri
- Pour Morgane
- Povestiri Fantastice (Romanian Edition)
- Power Sources
- Power Struggle and Other Stories from the Bete Novels
- Powerhouse Flies Again
- Powers of Detection
- Prairie Starport
- Prayers to Broken Stones
- Praying To The Aliens
- Predators and Other Stories
- Preghiere di fucine e fornaci
- Premio Avalón de Relato Fantástico
- Prescription for Chaos (RX for Chaos)
- Press Start to Play
- Pretendscious Vol. 1
- Preternatural
- Prevention Protocol
- Prey
- Price Of Power Volume 1
- Pride of Hearth
- PRIMATE Shape Shifters
- Primeira Guerra Mundial
- Primera antología de relatos
- Primordial Soup Kitchen: A Collection of Short Strangeness
- Principios Humildes
- Prisoner Of The Night
- Private Keys
- Proboscidi e prodezze
- Processional
- Professor Challenger
- Professor Tomlinson's Last Experiment
- Professor Witchey's Miracle Mood Cure
- Profondo Alpha
- Progeny
- Progetto Bokor
- Progetto Gemini
- Programmati per obbedire
- Programme des Épouses Interstellaires Coffret - Tomes 5-8
- Progress
- Project Galaxy
- Project Hail Mary Summary
- Project Hush
- Project Moonbase
- PROJECT Z
- Project: AKRA
- Prometheus
- The Prometheus Apocalypse
- The Prometheus Prophecy
- Prominence: Jump Master
- Prominence: Retribution
- Prominence: Veteran
- Promise in the Gold: A Cave Creek Anthology
- Promised Land
- Proof
- Proper Preparation
- Prophecy Queen: The Mackenna Saga Book 5
- Prospero's Dream
- Protective Measures
- Protocollo Uno
- Proton: Heroine of Chem
- Provolone: A Short Work
- Przyjaciel Iś
- Príbeh Vesmíru
- Pulling Up Stakes
- Pulp Adventures #33: New Guy on the Block
- Pulp Literature Spring 2021
- Pulphagus®: Rivoluzione!
- Pulphouse Fiction Magazine #11
- Pulphouse Fiction Magazine #12
- Pulphouse Fiction Magazine #13
- Pulphouse Fiction Magazine Issue #7
- Pulphouse Fiction Magazine Issue #8
- Pulphouse Fiction Magazine Issue Fourteen
- Punchcards from Atlantis
- Punchline