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- Adrienne Palmer (Camp Blood 2) - Missy Rae Hansen
- Axel Palmer aka The Miner (My Bloody Valentine) - Neil Affleck
- Santanico Pandemonium (From Dusk till Dawn) - Salma Hayek
- Palo (The Believers) - Malick Bowens
- Paul (The Lost Boys) - Brooke McCarter
- Paul and Peter (Funny Games)- Arno Frisch and Frank Giering
- Peaches (2001 Maniacs) - Wendy Kremer
- Rhoda Penmark (The Bad Seed) - Patty McCormack
- Pennywise the Dancing Clown aka It/Bob Gray (It) - Tim Curry
- Marion Penrose (Unhinged) - Janet Penner
- Bob and Ray Perkins (Curfew) - John Putch and Wendell Wellman
- The Phantom Killer (The Town That Dreaded Sundown) - Bud Davis
- Anton Phibes (The Abominable Dr. Phibes) - Vincent Price
- The Phone Voice (Scream) - Roger L. Jackson
- Pinhead (Puppet Master and its sequels)
- Pinhead aka Captain Elliott Spencer (Hellraiser and its sequels) - Doug Bradley
- Pinocchio (Pinocchio's Revenge) - Dick Beals
- Pin-up Girl (The Strangers) - Laura Margolis
- The Piranhas (Piranha)
- Harry S. Plinkett (Red Letter Media)
- Harry Powell (The Night of the Hunter) - Robert Mitchum
- Shane Powers (Lost Boys: The Tribe) - Angus Sutherland
- Alistair Pratt (FeardotCom) - Stephen Rea
- Predator (Predator, Predator 2, Alien vs. Predator, Alien vs. Predator Requiem, Predators) - Kevin Peter Hall, Ian Whyte, Brian Steele, Carey Jones, Derek Myers
- Charlie Puckett (The Night Brings Charlie) - Chuck Whiting
- Pumpkinhead (Pumpkinhead and its sequels) - Tom Woodruff, Jr.
- Chet Pussy (From Dusk till Dawn) - Cheech Marin
- Harlan Pyne (The Dark Hours) - Aidan Devine
- Psyche Pathos (2012 Argentinian short film) - AgustÃn Blasco
Read more about this topic: List Of Horror Film Antagonists