Witchhammer () is a 1970 Czechoslovak drama film directed by Otakar Vávra and starring Elo Romančík. Based on the novel "Kladivo na čarodějnice" by Václav Kaplický, "Witchhammer" relates the story of the Northern Moravia witch trials of the 1670s, focusing on the priest Kryštof Lautner, played by Romančík, who falls victim to the witchhunt after opposing the trials. The film contains possible allegory about Communist show trials in Czechoslovakia.