CKO
| Defunct | |
|---|---|
| Broadcast area | national | 
| Frequency | various | 
| Programming | |
| Format | News/talk | 
| Ownership | |
| Owner | Canada All-News Radio Ltd. | 
| History | |
| First air date | July 1, 1977 | 
| Last air date | November 10, 1989 | 
| Industry | Media | 
|---|---|
| Founded | 1977 | 
| Defunct | 1989 | 
| Fate | Off the air | 
| Headquarters | 65 Adelaide Street East, Toronto, Ontario (1977–1981); Carlton Inn Hotel beside Maple Leaf Gardens (1981–1988), | 
| Key people | David Ruskin, president and CEO | 
| Products | Radio news network | 
CKO was a Canadian radio news network which operated from 1977 to 1989. The CKO call sign was shared by twelve network-owned stations, as listed below.
The network was owned by Canada All-News Radio Ltd. AGRA Industries was originally a 45 percent partner in the network, but by 1988 it was the sole owner. David Ruskin was the network's founding president.