- Feb 11 Margaret Thatcher defeats Edward Heath for leadership of the British Conservative Party
- Mar 21 Ethiopia abolishes its monarchy after 3,000 years
- Apr 4 Microsoft is founded as a partnership between Bill Gates and Paul Allen to develop and sell BASIC interpreters for the Altair 8800
- Apr 29 Vietnam War: US begins to evacuate its citizens from Saigon in Operation Frequent Wind in response to advancing North Vietnamese forces, bringing an end to US involvement in the war
- Jun 7 Sony introduces the Betamax videocassette recorder for sale to the public
- Oct 1 Muhammad Ali TKOs Joe Frazier in 15 for heavyweight boxing title in "The Thrilla in Manila"
- Nov 11 Australian Prime Minister Gough Whitlam removed from office by Governor General Sir John Kerr - 1st elected PM removed in 200 yrs
"As the World Turns" and "The Edge of Night", the final two American soap operas that had resisted going to pre-taped broadcasts, air their last live episodes.
On November 28, 1975