The following is a list of events affecting Canadian television in 1958. Events listed include television show debuts, finales, cancellations, and channel launches.

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• The Board of Broadcast Governors (BBG) was established to be the “watchdog” of Canadian broadcasting under the new Broadcasting Act of 1958. The formation of the BBG, prompted by public demand for alternative programming choices, led to the establishment of “second” television stations in eight cities across the country.^[1]
• The CBC's first live coast-to-coast live television broadcast was aired after the cross-country microwave network was completed thanks to the cooperation with Bell Media, opening 6,400 kilometres (4,000 mi) worth of microwave links carrying television signals, teletype messages, and telephone calls.^[1]

• January 10 – Terrence Scammell, voice actor and voice director

• 1958 in Canada
• 1958 in television