Night Drum a.k.a. The Adulteress is a 1958 Japanese historical drama film directed by Tadashi Imai. It was written by Kaneto Shindō and Shinobu Hashimoto, based on the 1706 play Horikawa nami no tsuzumi by Monzaemon Chikamatsu. Film historians regard Night Drum as one of director Imai's major works.