- Apr 29 The Chemical Weapons Convention of 1993 comes into force, outlaws production, stockpiling and use of chemical weapons among its signatories.
- Jun 9 British lease on the New Territories in Hong Kong expires
- Jul 1 United Kingdom returns Hong Kong and the New Territories to the People's Republic of China
- Jul 25 Scientists announce the first human stem cells to be cultured in a laboratory using tissue taken from aborted human embryos
- Aug 31 Diana, Princess of Wales, dies in a car crash in a road tunnel in Paris
- Sep 11 After a nationwide referendum, Scotland votes to establish a devolved parliament, within the United Kingdom.
- Sep 16 Apple Computer Inc names co-founder Steve Jobs temporary CEO
- Dec 11 Delegates from 150 industrial nations attending a UN climate conference in Kyoto, Japan, reach agreement to control heat-trapping greenhouse gases
- Dec 29 Hong Kong begins slaughtering all its chickens to prevent bird flu
Scientists in Scotland announce they have cloned an adult mammal, producing a lamb named "Dolly"
On February 23, 1997