Quanderhorn (titled The Quanderhorn Xperimentations for series 1 and Quanderhorn 2 for the second series) is a science fiction comedy radio series written by Andrew Marshall and Rob Grant. The first series was originally broadcast in the United Kingdom by BBC Radio 4 in 2018, and a second in 2020. The series has elements that pastiche Nigel Kneale's Professor Bernard Quatermass.