"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 (Vol. 28, No. 5, p. 538-53). 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".