Swimming at the 1980 Summer Olympics – Men's 4 × 100 metre medley relay Heats Heats

| Rank_ | Heat | Country | Backstroke_leg | Breaststroke_leg | Butterfly_leg | Freestyle_leg |
|---|---|---|---|---|---|---|
| 7 | 1 | France | Frédéric Delcourt 59.38 | Olivier Borios 2:05.16 | Xavier Savin 3:01.01 | René Ecuyer 3:52.87 |
| 8 | 2 | Brazil | Romulo Arantes 58.27 | Sérgio Pinto Ribeiro 2:04.30 | Cláudio Kestener 3:01.33 | Cyro Delgado 3:53.32 |
| 9 | 1 | Spain | Moises Gonsalvez 1:01.20 | Gustavo Torrijos 2:07.16 | David López-Zubero 3:02.20 | Ramon Lavin 3:54.79 |
| 10 | 1 | Bulgaria | Branimir Popov 1:01.06 | Plamen Donchev 2:08.18 | Yulian Vasilev 3:06.21 | Tsvetan Golomeev 3:58.35 |
| 11 | 1 | Angola | Fernando Lopes 1:14.06 | Francisco Santos 2:31.56 | Marcos Daniel 3:35.91 | Jorge Lima 4:35.11 |
| — | 1 | Sweden | Michael Söderlund DSQ | Peter Berggren — | Per-Alvar Magnusson — | Per Holmertz — |
| — | 2 | Vietnam | Ngoc Thanh Pham 1:06.99 | Manh Tuan Nguyen 2:17.74 | Ngoc Ton Truong 3:20.18 | Van Ve To DSQ |