1973 (MCMLXXIII) was a common year starting on Monday of the Gregorian calendar.
January[]
- January: The single "Saw a New Morning"/"My Life Has Been a Song" is released
- January: Life in a Tin Can is released in the US
February[]
- February: Dennis Byron becomes the new drummer for the Bee Gees
- February 19: Concert at the Royal Festival Hall in London
March[]
- March 1: Life in a Tin Can is released in the UK and the tour begins
- March 5: Concert in New York
April[]
- April 6: Bee Gees perform on the Midnight Special
June[]
- June 22: "Wouldn't I Be Someone"/"Elisa" is released
- June 22: The Bee Gees perform on the Midnight Special
- June 24 Concert at the London Palladium
July[]
- July: Best of Bee Gees, Vol. 2 is released
August[]
- August 10: Bee Gees host the Midnight Special
- August 25: The cancellation of A Kick in the Head Is Worth Eight in the Pants is announced by Billboard Magazine
September[]
- September 6: Concert in Kurashika, Japan
- September 15: Concert in Tokyo, Japan
October[]
- October 12: Bee Gees perform on the Midnight Special
November[]
- November 14: "Heavy Breathing" is recorded
December[]
- December 1: Barry Gibb's son Steven is born
- December 18: "Dogs" is recorded
- December 20: "Charade" is recorded