Ivan Howard Dayman (20 July 1920 – 1 October 1989) was an Australian music promoter, record producer, label owner and talent manager of the 1960s and 1970s, based first in Adelaide, then Melbourne, Brisbane and Perth. Although his career was brief – ca. 1964 to 1968 – he is significant in the history of Australian popular music as the first person to establish an integrated entertainment group that included artist management, a booking agency, a chain of venues in major cities, and a recording label. He is also notable for the many successful artists he managed, including his flagship act, Australia's 1960s TV Week "King of Pop", Normie Rowe, whom he managed from 1965 onwards.