The men's 400 metre individual medley event at the 1980 Summer Olympics was held on 27 July at the Swimming Pool at the Olimpiysky Sports Complex.
|Men's 400 metre individual medley|
at the Games of the XXII Olympiad
|Venue||Swimming Pool at the Olimpiysky Sports Complex|
|Competitors||24 from 15 nations|
|Winning time||4:22.89 OR|
Prior to this competition, the existing world and Olympic records were as follows.
|World record||Jesse Vassallo (USA)||4:20.05||West Berlin, West Germany||28 August 1978|
|Olympic record||Rod Strachan (USA)||4:23.68||Montreal, Canada||25 July 1976|
The following records were established during the competition:
|27 July||Final||Aleksandr Sidorenko||Soviet Union||4:22.89||OR|
|Aleksandr Sidorenko||Soviet Union||4:22.89||OR|
|Sergey Fesenko||Soviet Union||4:23.43|
- ^ "Games of the XXII Olympiad Moscow 1980 – Volume 3: Participants and Results". Fizkultura i sport. pp. 450, 470. Retrieved 28 November 2018.