Night Drum a.k.a. The Adulteress (夜の鼓, Yoru no tsuzumi) is a 1958 Japanese historical drama film directed by Tadashi Imai. It was written by Kaneto Shindo 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.