The Runestone is a 1991 American adventure horror film written and directed by Willard Carroll in his feature directorial debut.

The film is an updating of the Ragnarok legend, with Fenrir being found in a runestone in Pennsylvania unearthed by archaeologists.

The film is based upon the novel by Mark E. Rogers, which was published in a small press limited edition pamphlet.

A young boy named Jacob (Chris Young) is haunted by terrifying nightmares of what is to come, and his uncle (William Hickey) explains these dreams through stories from Norse legend, which says that the only one who can destroy Fenrir is Týr, the Norse god of single combat, victory and heroic glory, who is prophesied to return to fight the creature.

The film cast includes Peter Riegert as a Pez popping, cussing policeman, and features a cameo by Rick Marzan as a police officer named Strange.