Ithaqua, also known as the Wind-Walker or the Wendigo, is a fictional character in the Cthulhu Mythos of H. P. Lovecraft. The titular creature debuted in August Derleth's short story "Ithaqua", which was based on Algernon Blackwood's tale "The Wendigo".
Ithaqua is one of the Great Old Ones and appears as a horrifying giant with a roughly human shape and glowing red eyes. He has been reported from as far north as the Arctic to the Sub-Arctic, where Native Americans first encountered him. He is believed to prowl the Arctic waste, hunting down unwary travelers and slaying them in a gruesome fashion. He is believed to have inspired the Native American legend of the Wendigo and possibly the Yeti.
Ithaqua's cult is small, but he is greatly feared in the far north. Fearful denizens of Siberia and Alaska often leave sacrifices for Ithaqua—not as worship but as appeasement. Those who join his cult are granted immunity to extremely cold temperatures. He often uses Shantaks, a dragon-like "lesser race", as servitors.
Ithaqua figures prominently in Brian Lumley's Lovecraft-based Titus Crow series, ruling the ice-world of Borea. In Lumley's works, Ithaqua periodically treads the winds of space between Earth and Borea, bringing helpless victims back to Borea to worship him among its snowy wastes.
He frequently attempts to reproduce with humanoid females, hoping to create offspring which can surpass his own limitations, imposed by the elder gods, and so help free the rest of the great old ones. It is suggested that Ithaqua has the ulterior motive of desiring offspring to assuage his bitter loneliness, as he is the only one of his kind. None of his surviving offspring to date has accommodated him, all turning against him at some point.
- Robert M. Price ed. (1998) . ""The Wendigo"". In Robert M. Price ed., ''The Ithaqua Cycle (1st ed. ed.). Oakland, CA: Chaosium.
- Robert M. Price ed. (1998) . "Ithaqua". In Robert M. Price ed., ''The Ithaqua Cycle (1st ed. ed.). Oakland, CA: Chaosium.
- (1993) . "Born of the Winds". Fruiting Bodies and Other Fungi Tor.
- (1991) . The Transition of Titus Crow Grafton.
- Robert M. Price ed. (1998) "Introduction: Ghost Riders in the Sky". In Robert M. Price ed., ''The Ithaqua Cycle: The Wind-Walker of the Icy Wastes (1st ed. ed.). Oakland, CA: Chaosium.
- Derleth was inspired by Blackwood's tale (who himself based the Wendigo on a creature from Native American Indian legend), but gave the creature a Lovecraftian name. (Price, "Ghost Riders in the Sky", "Who Has Seen the Wind?", The Ithaqua Cycle, pg. xi.)