Portal:Technology/Selected anniversaries/April
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- 2 April 1975 – Construction of the CN Tower in Toronto, Ontario, Canada, tops out, beginning the 553.33 metres (1,815.4 ft) tower's 34 year reign as the world's tallest free-standing structure
- 3 April 2010 – The first iPad (pictured) is released by Apple, Inc.
- 10 April 1861 – Governor of Massachusetts John Albion Andrew signs a charter incorporating the Massachusetts Institute of Technology
- 15 April 1912 – The RMS Titanic, at the time the world's largest ship, sinks after hitting an iceberg the night before in one of the deadliest peacetime maritime disasters in history