1914, April 7 - Grand Trunk Pacific Railway main line is completed between Winnipeg, Melville, Edmonton, Jasper and Prince Rupert. The last spike was driven at a location 93 miles west of Prince George, BC. The first sod was turned at Fort William, on the Lake Superior branch, by Sir Wilfred Laurier on 11 September 1904.

1885, April - Second Northwest (Riel) Rebellion. Van Horne moves troops to the west through northern Ontario entirely over Canadian soil. This efficient military movement demonstrated the advantages to Canada of a completed transcontinental railway and prompted the government to grant temporary aid to the CP to enable completion of the line.

1977, April 18 – The Hall Commission Report on Grain Handling and Transportation is published.

1953, April - Canadian National inaugurates its Museum Train with three steam locomotives and six cars.