Swimming at the 1984 Summer Olympics – Men's 400 metre individual medley
The final of the men's 200 metre individual medley event at the 1984 Summer Olympics was held in the McDonald's Olympic Swim Stadium in Los Angeles, California, on July 30, 1984. 24 athletes participated in the heats, with the fastest eight qualifying for the final.Records
Prior to this competition, the existing world and Olympic records were as follows.
The following records were established during the competition:
| Date | Round | Name | Nation | Time | Record |
| 30 July | Heat 3 | Alex Baumann | | 4:22.46 | |
| 30 July | Final A | Alex Baumann | | 4:17.41 | |
Results
Heats
Rule: The eight fastest swimmers advance to final A, while the next eight to final B.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 3 | 4 | Alex Baumann | | 4:22.46 | Q, |
| 2 | 3 | 5 | Jeff Kostoff | | 4:22.55 | Q |
| 3 | 1 | 4 | Giovanni Franceschi | | 4:23.03 | Q |
| 4 | 2 | 4 | Ricardo Prado | | 4:23.31 | Q |
| 5 | 1 | 5 | Maurizio Divano | | 4:23.61 | Q |
| 6 | 2 | 5 | Jesse Vassallo | | 4:23.82 | Q |
| 7 | 3 | 3 | Rob Woodhouse | | 4:24.85 | Q, OC |
| 8 | 3 | 6 | Stephen Poulter | | 4:25.38 | Q, NR |
| 9 | 2 | 3 | Ralf Diegel | | 4:28.10 | q |
| 10 | 2 | 6 | Arne Borgstrøm | | 4:28.37 | q |
| 11 | 2 | 7 | Andrew Phillips | | 4:29.43 | q, NR |
| 12 | 1 | 3 | Peter Dobson | | 4:29.61 | q |
| 13 | 1 | 2 | Shinji Ito | | 4:30.52 | q |
| 14 | 1 | 6 | Stuart Willmott | | 4:32.90 | q |
| 15 | 2 | 2 | Anders Peterson | | 4:32.93 | q |
| 16 | 3 | 7 | Yoram Kochavy | | 4:35.70 | q, NR |
| 17 | 1 | 7 | Scott Newkirk | | 4:48.15 | |
| 18 | 2 | 1 | Jairulla Jaitulla | | 4:51.24 | |
| 19 | 3 | 1 | Harry Wozniak | | 4:53.87 | |
| 20 | 1 | 1 | Ng Wing Hon | | 4:58.98 | |
| 21 | 2 | 8 | Julian Bolling | | 5:02.88 | |
| 22 | 3 | 8 | Wu Ming Hsun | | 5:02.94 | |
| 23 | 1 | 8 | Juan José Piro | | 5:15.68 | |
| 3 | 2 | Rafael Escalas | | | |
Finals
Final B
Final A
