- Jan 24 Apple Computer Inc unveils its revolutionary Macintosh personal computer
- Feb 29 Pierre Trudeau announces he is stepping down after 15 years as Canadian Prime Minister
- Apr 23 AIDS-virus identified as HTLV-III (acquired immune deficiency syndrome)
- Jun 5 Indira Gandhi orders attack on Sikh's holiest site (Golden Temple)
- Oct 25 Hepatitis virus is discovered
- Dec 3 Union Carbide pesticide plant leak of methyl isocyanate and other toxic compounds in Bhopal, India, kills 2,259 (official figure) - other estimates as high as 16,000 (including later deaths) and over half a million injured
During radio voice test US President Reagan jokes he "signed legislation that would outlaw Russia forever. We begin bombing in 5 minutes."
On August 11, 1984