Deke Leonard was the stage name of (born 18 December 1944, Llanelli, Wales - died 31 January 2017) a Welsh rock guitarist and keyboardist. In 1968 he joined , soon renamed as . In 1973, he formed his own band Iceberg, which disbanded at the end of that year when he rejoined Man. He went on to play with incarnations of both groups in later years.