Kalmar "Jack the Ripper" tana nufin wani kisa da ba a san ko wanene ba, wanda ke aiki a gundumar Whitechapel da ke birnin Landan, Ingila a shekara ta 1888. Sunan "Jack the Ripper" ya fito ne daga wata wasika da aka aika wa 'yan sanda a lokacin. , wai wanda ya kashe kansa ne ya rubuta shi. Wasikar an sanya wa hannu mai suna "Jack the Ripper" kuma tana dauke da mugayen bayanai game da kisan, wadanda ba a bayyana su a bainar jama'a ba a lokacin. Gane ainihin Jack the Ripper ya kasance a asirce har yau, kuma lamarin ya zama ɗaya daga cikin fitattun asirai da ba a warware ba a tarihi.