Swimming at the 1984 Summer Olympics – Men's 4 × 100 metre medley relay
The final of the men's 4 × 100 metre medley relay event at the 1984 Summer Olympics was held in Los Angeles, California, on August 4, 1984. 24 teams 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 new world and Olympic records were set during this competition.
| Date | Event | Name | Nationality | Time | Record |
| 4 August | Final | Rick Carey Steve Lundquist Pablo Morales Rowdy Gaines | 3:39.30 |
Results
Heats
Rule: The eight fastest teams advance to the final.| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 3 | 5 | Mark Kerry Peter Evans Jon Sieben Neil Brooks | 3:43.93 | Q | |
| 2 | 3 | 4 | Dave Wilson Richard Schroeder Mike Heath Tom Jager | 3:44.33 | Q | |
| 3 | 1 | 4 | Mike West Victor Davis Tom Ponting Sandy Goss | 3:46.12 | Q | |
| 4 | 3 | 3 | Patrick Ferland Étienne Dagon Théophile David Dano Halsall | 3:48.13 | Q | |
| 5 | 2 | 4 | Stefan Peter Gerald Mörken Andreas Behrend Alexander Schowtka | 3:49.75 | Q | |
| 6 | 3 | 8 | Michael Söderlund Peter Berggren Bengt Baron Per Johansson | 3:49.76 | Q | |
| 7 | 2 | 5 | Neil Harper Adrian Moorhouse Andy Jameson David Lowe | 3:49.86 | Q | |
| 8 | 3 | 6 | Daichi Suzuki Shigehiro Takahashi Taihei Saka Hiroshi Sakamoto | 3:50.14 | Q, NR | |
| 9 | 1 | 1 | Paul Kingsman Brett Austin Anthony Mosse Gary Hurring | 3:50.56 | NR | |
| 10 | 1 | 5 | Frédéric Delcourt Thierry Pata Xavier Savin Stéphan Caron | 3:50.75 | ||
| 11 | 2 | 6 | Wang Hao Jin Fu Zheng Jian Mu Lat | 3:51.71 | ||
| 12 | 2 | 1 | Ricardo Prado Luiz Carvalho Marcelo Jucá Cyro Delgado | 3:53.49 | ||
| 13 | 1 | 3 | Giovanni Frigo Jorge Henão Rafael Vidal Alberto Mestre | 3:55.12 | ||
| 14 | 1 | 6 | Ernesto Vela Eduardo Morillo Carlos Romo Ramiro Estrada | 3:56.11 | ||
| 15 | 3 | 2 | Sharif Nour Ayman Nadim Ahmed Said Mohamed Youssef | 3:59.31 | ||
| 16 | 2 | 2 | David Lim Fong Jock Oon Jin Teik Ang Peng Siong Oon Jin Gee | 4:00.07 | ||
| 17 | 3 | 1 | Allan Marsh Andrew Phillips Deryck Marks Gordon Scarlett | 4:05.35 | ||
| 18 | 2 | 7 | Erik Rosskopf Harrell Woolard Scott Newkirk Collier Woolard | 4:16.18 | ||
| 19 | 1 | 7 | Ernesto José Degenhart Fernando Marroquin Roberto Granados Rodrigo Leal | 4:16.94 | ||
| 20 | 1 | 8 | Salvador Covelo David Palma Juan José Piño Rodolfo Torres | 4:22.72 | ||
| 2 | 3 | Paolo Falchini Gianni Minervini Fabrizio Rampazzo Marcello Guarducci | ||||
| 1 | 2 | |||||
| 2 | 8 | |||||
| 3 | 7 |