A mask that through magical or mundane means, kills the person wearing it. The mask does this by smothering, strangling, suffocating, crushing, or poisoning its victim.

Subtrope of ArtifactOfDeath and possible ArtifactOfDoom. Related to EvilMask. Contrast with FaceHugger which, unlike the Murderous Mask, is often sentient and able to apply to the unwilling victim's face all by itself.

See also ClingyCostume.
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!!Examples:

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[[folder: Anime and Manga ]]

* ''Manga/{{Inuyasha}}'' features a mask with a piece of the MineralMacGuffin embedded in it. It latches onto people's faces to take over their bodies, which then quickly begin to rot.
* In ''Manga/JojosBizarreAdventure'' Dio initially believed the Stone Mask was this after seeing it sprout spikes when blood got splashed on it. It technically does kill people this way, but it also immediately revives them as superpowered vampires.

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[[folder: Comics ]]

* ''Franchise/{{Batman}}'':
** One comic featured an African tribal mask that, when donned, would scratch the wearer with a needle coated with a drug. The drug would drive the wearer into a beserker rage that eventually caused their heart to explode.
** Roman Sionis, the villain better known as Black Mask, has been known to kill or disfigure his victims with toxic masks.
* ''Creator/DCComics''' resident super-sorcerer, ComicBook/DoctorFate, wears a helmet that forces its user to wear it for life, and then absorb their life force into it.
* In ''ComicBook/{{Spawn}}'', one bum almost got smothered when he donned Al's mask for a joke.
* One ''Franchise/WonderWoman'' issue was about her being stuck in a mask that's rigged to explode.

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[[folder: Film ]]

* ''Film/TheAbominableDrPhibes'' featured a constricting frog mask that gradually crushed the head of its wearer.
* The lethal masks from ''Film/HalloweenIIISeasonOfTheWitch'' are textbook examples; they are just like any other mask, but if its wearer sees a certain commercial, all hell breaks loose.

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[[folder: Literature ]]

* In Creator/DianeDuane's Literature/{{Rihannsu}} ''Franchise/StarTrek'' novels, Romulan starships are frequently named ''Rhea's Helm''. The titular, legendary helm was the product of a sorcerer-smith who was asked to create a helmet that would make the wearer impervious to all harm. When the helm was donned, the demon she'd bound into it ''bit the wearer's head off''--nothing can harm a dead person.
* The Creator/GrahamMasterton horror novel ''Literature/DeathTrance'' features a scene where one of the bad guys, a psychotic Vietnam vet, puts on a full-head demon-mask featuring a leyak, an Indonesian evil spirit. He writhes in agony, to the accompaniment of screams and crunching noises, as his buddies try to get the mask off, but when it finally comes free, the dead man has no head left. Something has eaten his head while he was wearing the mask...
* Somewhat related is [[NewJediOrder Yuuzhan Vong]] vonduun crab armor. If worn by a non-Yuuzhan Vong, it will repeatedly attempt to kill its wearer.
** A notable example of the Vong armor is the one that the Sith lord Darth Krayt wears in the Legacy comic book series. The fact that it is eating Krayt alive is the source of much angst on his part and his frantic attempts to find a cure.

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[[folder: Live-Action Television ]]

* In an episode of ''RelicHunter'' a cursed mask causes its last wearer to have his/her face disfigured and then contract a wasting disease that will kill the victim if the curse is not passed to another person. The mask used to belong to a French executioner and the only way to permanently stop the curse is for Sidney to find the executioner's tomb and return the mask there.

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[[folder: Mythology and Folklore ]]

* In CelticMythology and French folklore, [[AristocratsAreEvil Princess Dahut-Ahès]] of the legendary Breton city of Ys used to take a different lover to bed every night provided the lover wore a black mask during their intense evening of pleasure. However, at the first rays of dawn, the mask would tighten and strangle the unfortunate suitor.

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[[folder: Tabletop Games ]]

* An old ''TabletopGame/DungeonsAndDragons'' monster invokes this: called the Executioner's Hood, it's a flat membrane that lives on the ceiling, dropping down on the heads of unsuspecting adventurers to suffocate them.

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[[folder: Toys ]]

* ''Franchise/{{BIONICLE}}'': Played with the Ignika. As only [[OnlyTheChosenMayWield destined beings can wear it]], any other being that so much as touch it will [[ArtifactOfDoom get cursed]]. While none affected have directly died from the curses, they either suffer FateWorseThanDeath or get CursedWithAwesome or BlessedWithSuck.

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[[folder: Video Games ]]

* The titular object from ''VideoGame/TheLegendOfZeldaMajorasMask''; in addition to possessing its wearer, it plans on killing a lot of people with ''[[ColonyDrop the moon]].''

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[[folder: Web Original ]]

* ''SCPFoundation'' [[http://www.scp-wiki.net/scp-035 describes a mask]] that compels anyone nearby to put it on so it can kill them and possess their body. The mask has expressed interest in 682, since the beast's AdaptiveAbility and HealingFactor would provide it with an eternal and powerful host body.

[[/folder]]
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