| Final | time | | | 1. Alain Gottvalles |  France | 55.0s | ER | | 2. Per-Ola Lindberg |  Sweden | 55.5s | | | 3. Ronald Kroon |  Netherlands | 55.5s | NR | | 4. Robert McGregor |  Great Britain | 55.7s | | | 5. Frank Wiegand |  East Germany | 56.1s | NR | | 6. Igor Buryhin |  Soviet Union | 56.1s | NR | | 7. Gyula Dobay |  Hungary | 57.0s | | | 8. Horst-Gunther Gregor | East Germany | 57.0s | |
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| Semi 1 | time | Rk. | | 1. Robert McGregor | Great Britain | 56.1s | 3. | | 2. Ronald Kroon | Netherlands | 56.4s | 5. | | 3. Frank Wiegand | East Germany | 56.5s | 6. | | 4. Viktor Konoplev | Soviet Union | 56.6s | 9. | | 5. Gert Kolli |  Austria | 57.2s | 11. | | 6. Andrzej Salomon |  Poland | 57.8s | 13. | | 7. S. Clarke | Great Britain | 58.0s | 14. | | 8. Bert Sitters | Netherlands | 58.2s | 15. |
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| Semi 2 | time | Rk. | | 1. Per-Ola Lindberg | Sweden | 55.7s | 1. | | 2. Alain Gottvalles | France | 56.0s | 2. | | 3. Gyula Dobay | Hungary | 56.3s | 4. | | 4. Horst-Gunther Gregor | East Germany | 56.5s | 6. | | 5. Igor Buryhin | Soviet Union | 56.5s | 6. | | 6. Petr Lohnicky |  Czechoslovakia | 57.1s | 10. | | 7. Jindrich Vagner | Czechoslovakia | 57.4s | 12. | | 8. Valentin Popov |  Bulgaria | 58.0s | 16. |
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Heats - Sunday, 19th August | | Best 16 to Semi-Finals. Swimm-Off needed to decide th 16th place. |
| Heat 1 | time | | Rk. | | 1. Jindrich Vagner | Czechoslovakia | 57.5s | | 12. | | 2. Stanley Clarke | Great Britain | 57.5s | | 13. | | 3. Valentin Popov | Bulgaria | 57.5s | NR | 14. | | 4. Gerard Gropaiz | France | 57.7s | | 16. | | 5. Matts Svensson | Sweden | 57.9s | | 20. | | 6. Jose N. Espinosa |  Spain | 59.9s | | 26. | | 7. Georges Marquart |  Luxembourg | 1:02.9 | | 29. |
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| Heat 2 | time | Rk. | | 1. Gyula Dobay | Hungary | 56.2s | 2. | | 2. Viktor Konoplev | Soviet Union | 56.3s | 3. | | 3. Horst-Gunther Guenter | East Germany | 57.3s | 10. | | 4. Bert Sitters | Netherlands | 57.6s | 15. | | 5. Jopn Vengel |  Norway | 1:02.0 | 28. |
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| Heat 3 | time | Rk. | | 1. Alain Gottvalles | France | 56.3s | 3. | | 2. Frank Wiegand | East Germany | 56.6s | 6. | | 3. Petr Lohnicky | Czechoslovakia | 57.1s | 8. | | 4. Igor Buryhin | Soviet Union | 57.7s | 16. | | 5. Nenad Curidza |  Yugoslavia | 58.0s | 21. | | 6. Bernard Aluchna | Poland | 58.2s | 22. | | 7. Helmut Ilk | Austria | 59.4s | 25. |
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| Heat 4 | time | Rk. | | 1. Ronald Kroon | Netherlands | 55.6s | 1. | | 2. Robert McGregor | Great Britain | 56.3s | 3. | | 3. Laslzo Szlanka | Hungary | 57.7s | 16. | | 4. Pier-Paolo Sprangaro |  Italy | 58.4s | 23. | | 5. Georges Helbes | Luxembourg | 1:01.1 | 27. | | 6. Vinko Rosic | Yugoslavia | 1:05.0 | 30. |
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| Heat 5 | time | | Rk. | | 1. Per-Ola Lindberg | Sweden | 56.6s | | 6. | | 2. Gert Koelli | Austria | 57.2s | NR | 9. | | 3. Andrzej Salomon | Poland | 57.4s | | 11. | | 4. Massimo Borracci | Italy | 57.8s | | 19. | | 5. Jose Cossio | Spain | 59.0s | | 24. |
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| Swimm-Off | time | Rk. | | 1. Igor Buryhin | Soviet Union | 56.5s | 16. | | 2. Gerard Gropaiz | France | 56.8s | 17. | | 3. Laszlo Szianka | Hungary | 57.3s | 18. |
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