Arkham is a fictional city situated in Massachusetts, United States. An integral part of the Lovecraft Country setting created by H. P. Lovecraft, Arkham is featured in many of his stories and those of other Cthulhu Mythos writers.

Lovecraft Country is a term coined for the New England setting used by H. P. Lovecraft in many of his weird fiction stories, which combines real and fictitious locations. This setting has been elaborated on by other writers working in the Cthulhu Mythos. The phrase was not in use during Lovecraft's own lifetime; it was coined by Keith Herber for the Lovecraftian role-playing game Call of Cthulhu.