- Sister, Sister
- Sisters
- Skinned Alive
- Skinwalker Ranch
- Slaughter
- Slaughter Daughter
- Slaughter High
- Sledge
- Sleep Dealer
- Sleepaway Camp
- Sleepaway Camp II: Unhappy Campers
- Sleepaway Camp III: Teenage Wasteland
- Sleeper
- Slink
- Snake Island
- Snakehead Terror
- Snow Beast
- Snow White: A Tale of Terror
- Snow White: Deadly Summer
- Snowmageddon
- Snuff
- Solitary
- Someone's Watching Me! (1978)
- Sometimes They Come Back
- Sometimes They Come Back...Again
- Sometimes They Come Back…for More
- Son of Frankenstein
- Son of Kong
- Son of Sam
- Sorority Horror House
- Sorority Party Massacre
- Soul's Midnight
- Southern Gothic
- Space Zombies: 13 Months of Brain-Spinning Mayhem!
- Spawn
- Species
- Species II
- Species III
- Species: The Awakening
- Spiker
- Spiral (2007)
- Spirit Trap
- Spliced
- Splintered
- Stag Knight
- Stagefright
- Stash
- Staunton Hill
- Stay Alive
- Stephen King's a Good Marriage
- Stephen King's Cat's Eye
- Stephen King's Desperation
- Stephen King's Graveyard Shift
- Stephen King's Silver Bullet
- Stephen King's Thinner
- Stephen King's, It
- Steve Niles' Remains
- Stir of Echoes
- Stir of Echoes 2: The Homecoming
- Strait-Jacket
- Strange Circus
- StrangeLand
- Straw Dogs
- Strigoi
- Strip Nude for Your Killer
- Stripped
- Stripperland
- Stuck
- Student Bodies
- SubHysteria
- Sublime
- Subspecies
- Succubus
- Suck (2009)
- Suicide Club
- Suicide Girls Must Die!
- Super Hybrid
- Super Storm
- Supercroc
- Supernatural Activity
- Suspended Animation
- Sutures
- Sweeney Todd: The Demon Barber of Fleet Street
- Séance