"The Haunter of the Dark" is a horror short story by American author H. P. Lovecraft, written between 5-9 November 1935 and published in the December 1936 edition of Weird Tales. It was the last-written of the author's known works, and is part of the Cthulhu Mythos. The epigraph to the story is the second stanza of Lovecraft's 1917 poem "Nemesis".

In Providence, Rhode Island, Robert Blake, a young writer with an interest in the occult, becomes fascinated by a large disused church on Federal Hill which he can see from his lodgings on the city's Upper East side. His researches reveal that the church has a sinister history involving a cult called the Church of Starry Wisdom and is dreaded by the local migrant inhabitants as being haunted by a primeval evil...

Famous works of the author Howard Phillips Lovecraft: At the Mountains of Madness, The Dreams in the Witch House, The Horror at Red Hook, The Shadow Out of Time, The Shadows over Innsmouth, The Alchemist, Reanimator, Ex Oblivione, Azathoth, The Call of Cthulhu, The Cats of Ulthar, The Festival, The Silver Key, The Other Gods, The Outsider, The Temple, The Picture in the House, The Shunned House, The Terrible Old Man, The Tomb, Dagon, What the Moon Brings.