I'm stronger than that now. Now I can kill.
— Sam prepares to kill Alastair
in On The Head Of A Pin
I've killed innocent people in the line of duty. But I'm pretty sure it's not something the old me could've done. And maybe I should feel guilty. But I don't.
Beings killed by Sam Winchester.

Angels

Higher Angels

Regular Angels

Demons

Princes of Hell

Crossroad Demons

White-eyed demons

Regular Demons

Ghosts

Buruburu

  • Luther Garland - Wrapped an iron chain etched in spellwork around Luther's neck enabling Bobby to drag Luther behind the Impala in a recreation of Luther's death, effectively scaring Luther to rest.

Death Omens

  • Kate Fox - Burned her bones mistakenly believing that her ghost was killing people.

Vengeful Spirits

Violent Spirits

Other

Monsters

Alphas

Amazons

Arachne

Changelings

Crocotta

  • Clark Adams - Killed when Sam impaled him through the back of the neck on a silver spike.

Djinn

Dragons

Ghouls

Hellhounds

Leviathans

  • Edgar (permanently incapacitated) - Decapitated by Sam with a butcher knife.
  • Joyce Bickleebee (permanently incapacitated) - Splashed with borax and then decapitated by Sam with a sword. Presumably devoured by George afterwards.

Musca

  • Rogue Musca - Shot in the chest.

Qareen

Rabids

  • Rabid Nurse - Slit her throat with a scalpel in self-defense.

Rakshasa

Rugarus

Shapeshifters

Soul Eaters

Skinwalkers

Vampires

Vetala

  • Marlene - Stabbed in the heart with a silver knife by Sam which he then twisted.

Werewolves

Zombies

Humans

British Men of Letters

Hunters

Psychics

Special Children

  • Jake Talley - Shot four times in the back and then three more in the chest.

Styne Family

  • Jacob Frankenstein - Stabbed in the stomach with a knife after he was shot five times by Dean.

Thules

Witches/Magic Practitioners

Vessels

Regular Humans

Other

  • Scarecrow - Exploded into goo after Sam killed Calliope.
  • Soulless Sam - While trapped in a coma after Castiel broke the wall in his head, Sam engaged in battle with his soulless self and killed him with a shot through the back.
  • Tortured Sam - While trapped in a coma after Castiel broke the wall in his head, Sam encountered a tortured version of himself bearing all of Sam's memories from Lucifer's Cage. To fully reintegrate himself, Sam killed the tortured version of himself with a knife in Bobby's kitchen.

Deities

Four Horsemen of the Apocalypse

Alternate realities and timelines

Humans

Hunters

  • Jody Mills - Killed by Sam for attempting to stop him in a world where he became the leader of a demon army.
  • Bobby Singer - Killed by Sam for attempting to stop him in a world where he became the leader of a demon army.
  • Dean Winchester - Neck snapped with telekinesis by Sam for attempting to stop him in a world where he became the leader of a demon army.
  • Unnamed hunter - Neck snapped with telekinesis by Sam for attempting to stop him in a world where he became the leader of a demon army.
  • Unnamed hunter - Throat slit and stabbed in the side by Sam, after being turned into a vampire in a future where the Winchesters locked God away.

Monsters

Vampires

  • Benny Lafitte - Killed by Sam for attempting to stop him in a world where he became the leader of a demon army.

Non-Canon

Deities

Monsters

Aswang

Harpies

  • Podrage - Shot through the heart with Bobby's rifle, allowing Bobby to plant a knife in her heart, keeping her incapacitated until he, Sam and Dean could burn the harpies bodies, killing them.
  • Te - Shot twice through the heart with Bobby's rifle, allowing Dean to plant a knife in her heart, keeping her incapacitated until he, Sam and Bobby could burn the harpies bodies, killing them.

Jakkals

Night Hags

  • Olga's Night Hag - Stabbed with a makeshift iron short-spear after tricking the night hag into feeding on him, rendering her vulnerable to harm.

Shtriga

Vampires

  • Four unnamed vampires - Two decapitated with a chainsaw in Port Reyes Station and two more decapitated on a cliff side with an ice axe when they came for revenge.

Werewolves

Ghosts

Vengeful Spirits

  • Several ghosts of the Forty Year - Killed during the third murder cycle by rock salt rounds or their own weapons.

Violent Spirits

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