CHUM Limited was a media company based in Toronto, Ontario, Canada, from 1945 to 2007. Immediately prior to its acquisition, it held full or joint control of two Canadian television systems—Citytv and A-Channel (formerly NewNet, now CTV Two)—comprising 11 local stations, and one CBC Television (Canadian Broadcasting Corporation) affiliate, one provincial educational channel, and 20 branded specialty television channels, most notably MuchMusic and its various spinoffs. In addition, CHUM controlled 33 radio stations across Canada. At various points in its history, CHUM owned other radio stations and ATV/Atlantic Satellite Network in Atlantic Canada.