1983 (MCMLXXXIII) was a common year starting on Saturday of the Gregorian calendar.
- May 21: "The Woman In You" enters the US charts
- June 21: Robin's son, Robin-John Gibb, is born
- July 9: The Staying Alive sountrack is released
- July 10: Staying Alive enters the Japanese charts
- August 20: "Someone Belonging to Someone" enters the US charts
- August 30: The album Staying Alive is certified gold and platinum in the US
- September 9: Robin Gibb is sentenced to 14 days in prison for illegally speaking to the press about his previous marriage
- September 29: Andy Gibb appears on an episode of the NBC sitcom Gimme a Break!
- October 18: The single "Islands in the Stream" is certified gold in the US
- October 29: "Islands in the Stream" reaches No. 1 in the US
- October 31: The album Eyes That See in the Dark is certified gold and platinum in the US
- December 7: The single "Islands in the Stream" is certified platinum in the US
- December 17: "Islands in the Stream" reaches No. 1 in Australia