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Horror Movies About Cults

These cult horror movies center on secretive communities and fanatical groups whose beliefs, manipulation, violence, or rituals turn increasingly dangerous.

Horror movies about cults make organized belief itself a source of fear, whether the group follows occult rituals, pagan traditions, apocalyptic teachings, supernatural forces, or a charismatic human leader. These horror films about cults focus on stories where the group and its practices materially shape the main conflict, from outsiders entering isolated communities to people discovering conspiracies hidden behind seemingly ordinary gatherings. The cult may operate openly or remain concealed for much of the story, and paranormal elements are not required. What matters is that the members, ideology, manipulation, rituals, or collective actions remain central to the horror rather than serving as brief background lore.

01
Midsommar poster

Midsommar

2019

Still reeling from a devastating family tragedy, Dani joins her boyfriend and his friends on a trip to a remote Swedish community for a rare midsummer festival. The welcoming celebration gradually reveals unsettling customs and ritual practices that place the visitors increasingly at odds with their hosts.

Why it fitsMay contain spoilers

The Hårga community's insular beliefs, ritual killings, manipulation of outsiders, sexual rites, and sacrificial practices are central to the setting, threat, and progression of the horror.

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02
Hereditary poster

Hereditary

2018

After the death of her secretive mother, artist Annie Graham and her family begin experiencing grief, disturbing visions, and increasingly frightening supernatural events. As tensions inside the household intensify, troubling connections to the family's past suggest that forces beyond their understanding have been closing in around them.

Why it fitsMay contain spoilers

An occult cult covertly manipulates the central family toward a planned demonic ritual, making the group's conspiracy fundamental to the movie's supernatural horror.

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03
The Invitation poster

The Invitation

2015

Will attends a dinner hosted by his ex-wife and her new husband, only to become suspicious of their unsettling new spiritual movement and the strangers invited alongside old friends. As the evening grows more uncomfortable, he struggles to decide whether genuine danger surrounds him or his own grief is distorting his judgment.

Why it fitsMay contain spoilers

The dinner party is built around members of The Invitation, whose grief-based cult ideology, recruitment, assisted suicide beliefs, and coordinated murderous plan drive the central mystery and threat.

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04
Mandy poster

Mandy

2018

Red and Mandy live quietly in the wilderness until Jeremiah Sand, the self-styled leader of a fanatical religious group, becomes obsessed with Mandy. Sand's followers and a violent biker gang shatter the couple's isolation, sending Red into a surreal and increasingly brutal confrontation with the people responsible.

Why it fitsMay contain spoilers

Jeremiah Sand leads a religious cult whose followers abduct Mandy, participate in coercive rituals and violence, and commit the killing that launches the movie's central revenge conflict.

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05
Doctor Sleep poster

Doctor Sleep

2019

Years after his childhood trauma at the Overlook Hotel, Dan Torrance encounters Abra, a gifted girl who shares his psychic ability. Her extraordinary power attracts the True Knot, a roaming group that preys on children with similar gifts, forcing Dan to confront both the new threat and memories he has tried to escape.

Why it fitsMay contain spoilers

The True Knot is an organized predatory cult with a leader, initiation rites, shared supernatural practices, and systematic child murders, and confronting the group drives much of the main story; the film also substantially incorporates non-cult Overlook mythology.

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06
Mother! poster

Mother!

2017

A young woman works to restore the secluded home she shares with her celebrated poet husband, but their peace collapses when unexpected visitors begin arriving. As her husband welcomes increasingly devoted strangers inside, admiration gives way to fanaticism, disorder, and frightening collective behavior that overwhelms both the house and its owner.

Why it fitsMay contain spoilers

Him's increasingly fanatical followers become a cult-like religious mass whose worship, rituals, violence, and sacrifice drive the movie's major horror escalation, though the group emerges relatively late and functions heavily through allegory.

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07
Kill List poster

Kill List

2011

Former soldier Jay returns to contract killing alongside his partner Gal after months away from work. A mysterious client gives them a short list of targets, but the assignment grows increasingly disturbing as cryptic behavior, strange symbols, and ritualistic clues draw the two men toward a far darker conspiracy.

Why it fitsMay contain spoilers

An occult cult covertly orchestrates the protagonist's assignments and ultimately draws him into its ritual agenda, making the group a consequential underlying force in the story.

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08
Apostle poster

Apostle

2018

In 1905, Thomas Richardson travels to an isolated Welsh island after his sister is kidnapped by a religious cult demanding ransom. Disguised as a convert, he enters the community and discovers that its leaders, rituals, and promised prosperity conceal increasingly violent secrets tied to the island itself.

Why it fitsMay contain spoilers

The protagonist infiltrates an isolated religious cult whose leadership, rituals, punishments, supernatural beliefs, and control of its community dominate the central conflict.

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09
The House of the Devil poster

The House of the Devil

2009

College student Samantha accepts a lucrative babysitting job at an isolated house during a lunar eclipse, only to learn that her employers have misrepresented what they need from her. Alone in the unfamiliar home, she encounters increasingly ominous signs that the strange arrangement is connected to a carefully planned satanic ritual.

Why it fitsMay contain spoilers

A babysitting job is revealed as a trap arranged by a satanic cult for an occult ritual, making the group's conspiracy and ceremonial objective fundamental to the horror.

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