Top Grossing Horror Movies in September 2021
| Rank | Title | Language | Domestic | Worldwide |
|---|---|---|---|---|
| 1 | Malignant |  EN | $13,391,791 | $34,891,791 |
| 2 | The Grandmother |  ES | $4,343 | $3,033,653 |
| 3 | Two Witches | EN | - | $537,974 |
| 4 | Ogre |  FR | - | $303,601 |
| 5 | Martyrs Lane | EN | - | $246,891 |
| 6 | Lair | EN | - | $154,360 |
| 7 | Restart the Earth |  CN | - | $114,119 |
| 8 | Prisoners of the Ghostland | EN | - | $80,425 |
| 9 | Sir-Ayet: Ölü Doğan |  TR | - | $70,416 |
| 10 | The Nowhere Inn | EN | $54,094 | $62,337 |
| 11 | January |  BG | - | $24,022 |
| 12 | We Need to Do Something | EN | $13,589 | $15,318 |
| 13 | Aileen Wuornos: American Boogeywoman | EN | - | $15,202 |
| 14 | Malencolía |  GL | - | $10,433 |
| 15 | Monsters of War | EN | - | $6,854 |
| 16 | The Manson Brothers: Midnight Zombie Massacre | EN | - | $495 |
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