| Event: | Men's 4 x 100 metres relay |
| Competition: | European Athletics Championships |
The men's 4 x 100 metres relay at the 1966 European Athletics Championships was held in Budapest, Hungary, at Népstadion on 3 and 4 September 1966.
| Gold | Marc Berger Jocelyn Delecour Claude Piquemal Roger Bambuck  | |
| Silver | Edvin Ozolin Amin Tuyakov Boris Savchuk Nikolay Ivanov | |
| Bronze | Hans-Jürgen Felsen Gerd Metz Dieter Enderlein Manfred Knickenberg |
4 September
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| align=left | | 39.4 | CR | |||
| align=left | 39.8 | |||||
| align=left | 39.8 | |||||
| 4 | align=left | 40.0 | ||||
| 5 | align=left |  | 40.1 | |||
| 6 | align=left |  | 40.2 | |||
| 7 | align=left | 40.6 | ||||
| 8 | align=left | 40.7 |
3 September
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| 1 | align=left | 39.8 | Q | |||
| 2 | align=left | | 40.0 | Q | ||
| 3 | align=left | | 40.0 | Q | ||
| 4 | align=left | 40.0 | Q | |||
| 5 | align=left |  | 40.6 | |||
| 6 | align=left | 41.4 | ||||
| 7 | align=left |  | 42.8 |
| Rank | Nation | Competitors | Time | Notes | ||
|---|---|---|---|---|---|---|
| 1 | align=left | | 39.5 | CR Q | ||
| 2 | align=left | 39.8 | Q | |||
| 3 | align=left | 39.8 | Q | |||
| 4 | align=left | 40.6 | Q | |||
| 5 | align=left |  | 40.7 |
According to an unofficial count, 48 athletes from 12 countries participated in the event.
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