Lokis (Polish: Lokis. Rękopis profesora Wittembacha, lit. 'Lokis. A Manuscript of Professor Wittembach') is a 1970 Polish folk horror film written and directed by Janusz Majewski, and based on the 1869 Prosper Mérimée horror novel of the same name. "Lokis" is Mérimée's misspelling of the Lithuanian word lokys for "bear".