- Ao Oni: Forever
- Ao Oni: Grudge
- Ao Oni: Mutation
- Ao Oni: Vengeance
- Aos que habitam a escuridão e outras histórias
- Apartamento 16 (NE)
- Apartment 1B
- Apartment 7C
- Apartment Building E
- Apep
- Apeshit
- Apeshit – Pazzi Furiosi
- Apex Magazine Issue 121
- Apex Magazine Issue 122
- Apex Magazine Issue 123
- Apex Magazine Issue 124
- Apex Magazine Issue 16
- Apex Magazine: Issue 56
- Apex Magazine: Issue 94
- Aphorismes et définitions
- Apoca Lypse Sink Ships
- Apocali-se: Outros contos sobre o Fim
- Apocalipsa
- Apocalipse Zumbi
- Apocalipsis Z: Los días oscuros
- Apocalipsis. El libro en el que se basa la serie The Stand
- Apocalipso
- Apocalisse Anno 10
- Apocalisse Peluche
- Apocalypse
- Apocalypse Blue
- Apocalypse Green
- Apocalypse Hal's 'Whatcha Gonna' Guide to the Zombie Apocalypse
- Apocalypse In Motion
- Apocalypse Marseille
- Apocalypse Nigh
- Apocalypse of the Dead
- Apocalypse Pack (Three Apocalyptic Thrillers)
- Apocalypse Scenario #683: The Box
- Apocalypse the Memoir
- Apocalypse Utah
- Apocalypse--Book 1--an Archon zombie novel (Apocalypse, #1)
- Apocalyptic Montessa and Nuclear Lulu: A Tale of Atomic Love
- Apocalyptic Organ Grinder
- Apocalyptic: A Doomsday Anthology
- APOCANGELICA Wild Beasts
- Apocrypha Sequence: Deviance
- Apocrypha Sequence: Divinity
- Apocrypha Sequence: Insanity
- Apokalypse Z – Zorn der Gerechten
- Apollo 911
- Apophis, au clair de lune
- Apostle Rising
- Appalachian Blues
- Appalachian Galapagos
- Apparitions
- Appartement 103
- Apple and Knife
- Appliance-ocalypse (A Short Story)
- Aprendizado
- Apricot Eyes
- April's Panic Room An Anthology of Horror
- Aprisionado
- Après les festivités du printemps
- Apt Pupil
- Aquarius
- Arachnid 2.0
- Arachnophobia
- Araffra
- Ararat
- Araffra
- Ararat
- Arca Ferrum
- Arcadian Genesis (Alex Hunter 0.5): Expanded Edition
- Arcadian Genesis: Alex Hunter 0.5
- Arcana
- Arcane
- Arcano XV
- Arcanum
- Archie Hartigan and the Frost Wolf
- Arcontes
- Arcs
- Arctic Outbreak (Zombie Dawn Stories)
- Ard
- Ardath
- Arde Bruja Arde
- Are You Afraid of the Dark?
- Are You There and Other Stories
- Aren't There Any Happy Endings?
- Ares
- Argosy Volume 2: Pulp Modern
- Aria fredda
- Ariadne, I Love You
- ARIANNA E IL MINOTAURO. Tra Orrore e Conoscenza
- Arizona blues
- Arizona Splash
- Ark: Echo from the Past (Tales of the Executioners)
- Arkane Glut
- Arkham Horror - L'Ultimo Rituale
- Arkham Horror - La Collera di N'kai
- Arkham Horror: Das letzte Ritual
- Arkham Horror: Litanei der Träume
- Arkham Nights
- Arlington