Radio Canada International (RCI) is the international broadcasting service of the Canadian Broadcasting Corporation (CBC). Prior to 1970, RCI was known as the CBC International Service. The broadcasting service was also previously referred to as the Voice of Canada, broadcasting on shortwave from powerful transmitters in Sackville, New Brunswick. "In its heyday", said Radio World magazine, "Radio Canada International was one of the world's most listened-to international shortwave broadcasters". However, as the result of an 80 percent budget cut, shortwave services were terminated in June 2012, and RCI became accessible exclusively via the Internet. It also reduced its services to five languages and ended production of its own news service.

International broadcasting, in a limited extent, began during World War I, when German and British stations broadcast press communiqués using Morse code. With the severing of Germany's undersea cables, the wireless telegraph station in Nauen was the country's sole means of long-distance communication.