| Final | | time | | birth | | 1. Christiaan Berger |  Netherlands | 10.6s | | | | 2. Erich Borchmeyer |  Germany | 10.7s | | 23.01.05 | | 3. József Sir |  Hungary | 10.7s | CR | 28.04.12 | | 4. Paul Hanni |  Switzerland | 10.8s | Q | | | 5. Martinus Osendarp | Netherlands | 10.9s | | 21.05.16 | | 6. Gerd Hornberger | Germany | 10.9s | Q | |
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| Venue: Estadio Benito Mussolini. | | History Men 100m | | 15 Competitors from 10 Nations. |
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| | | First 3 progress to Final. |
| Semi 1 | time | | | 1. József Sir |  HUN | 10.6s | CR Q | | 2. Erich Borchmeyer |  GER | 10.8s | Q | | 3. Martinus Osendarp |  NED | 10.9s | Q | | 4. Orazio Mariani |  ITA | 10.9s | | | 5. Albert Jud |  SUI | NTs | | | 6. Karel Bergmann |  TCH | NTs | |
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| Semi 2 | time | | | 1. Christiaan Berger | NED | 10.7s | Q | | 2. Paul Hanni | SUI | 10.8s | Q | | 3. Gerd Hornberger | GER | 10.9s | Q | | 4. Julije Bauer |  YUG | NT | | | 5. Ulderico Di Blas | ITA | NT | | | 6. Robert Paul |  FRA | 11.0s | |
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| Heat 1 | time | | | 1. Paul Hanni | SUI | 11.1s | Q | | 2. Julije Bauer | YUG | 11.2s | Q | | 3. Erich Borchmeyer | GER | 11.2s | Q |
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| Heat 2 | time | | | 1. Christiaan Berger | NED | 10.6s | CR Q | | 2. Albert Jud | SUI | 10.8s | Q | | 3. Orazio Mariani | ITA | 10.9s | Q | | 4. Pierre Dondelinger | FRA | 11.0s | | | 5. Janis Kivitis |  LAT | NTs | |
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| Heat 3 | time | | | 1. Gerd Hornberger | GER | 11.1s | Q | | 2. Ulderico Di Blas | ITA | 11.1s | Q | | 3. Karel Bergmann | TCH | 11.3s | Q | | 4. Mario Porto |  POR | 11.3s | |
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| Heat 4 | time | | | 1. József Sir | HUN | 11.0s | Q | | 2. Martinus Osendarp | NED | 11.1s | Q | | 3. Robert Paul | FRA | NT | Q |
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