Hill will join the radio audience measurement body on 6 September. He replaces Sally de la Bedoyere, who stepped down at the beginning of June.
Hill was formerly worldwide strategic development director for media agency Initiative Media, a division of United News & Media.
He has also held roles at sponsorship agency TSMS and Anglia TV and served as a director of television audience measurement body BARB. He is a former chairman of ITV research and chairman of the IPA’s five-year strategy group.
Rajar chairman David Mansfield says: “It is very important for the radio industry that the day-to-day running of Rajar is in professional and capable hands and we feel confident that Jerry is this person.”