| Event: | Men's 400 metres hurdles |
| Competition: | European Athletics Championships |
The men's 400 metres hurdles at the 1966 European Athletics Championships was held in Budapest, Hungary, at Népstadion on 31 August, 1 and 2 September 1966.
| Gold | Roberto Frinolli | |
| Silver | Gerd Lössdorfer | |
| Bronze | Robert Poirier |
2 September
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 49.8 | ||||
| align=left | align=left | 50.3 | |||||
| align=left | align=left | | 50.5 | ||||
| 4 | align=left | align=left | 50.5 | ||||
| 5 | align=left | align=left |  | 50.9 | |||
| 6 | align=left | align=left | 51.2 | ||||
| 7 | align=left | align=left | | 51.3 | |||
| 8 | align=left | align=left | | 52.9 |
1 September
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 50.3 | Q | ||
| 2 | align=left | align=left | | 50.7 | Q | ||
| 3 | align=left | align=left | 50.7 | Q | |||
| 4 | align=left | align=left | | 50.9 | Q | ||
| 5 | align=left | align=left |  | 52.1 | |||
| 6 | align=left | align=left |  | 52.3 | |||
| 7 | align=left | align=left | 52.3 | ||||
| 8 | align=left | align=left |  | 53.6 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 50.5 | Q | |||
| 2 | align=left | align=left | | 50.6 | Q | ||
| 3 | align=left | align=left | 50.7 | Q | |||
| 4 | align=left | align=left | | 50.7 | Q | ||
| 5 | align=left | align=left | | 50.7 | |||
| 6 | align=left | align=left |  | 51.0 | |||
| 7 | align=left | align=left |  | 51.7 | |||
| 8 | align=left | align=left | | 53.4 |
31 August
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 52.0 | Q | |||
| 2 | align=left | align=left | | 52.1 | Q | ||
| 3 | align=left | align=left | | 52.8 | Q | ||
| 4 | align=left | align=left | | 54.2 | Q | ||
| 5 | align=left | align=left |  | 55.0 | |||
| 6 | align=left | align=left |  | 55.8 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 51.0 | Q | ||
| 2 | align=left | align=left | | 52.2 | Q | ||
| 3 | align=left | align=left | | 52.3 | Q | ||
| 4 | align=left | align=left | | 52.7 | Q | ||
| 5 | align=left | align=left | 54.6 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 51.1 | Q | |||
| 2 | align=left | align=left | 51.8 | Q | |||
| 3 | align=left | align=left | | 52.1 | Q | ||
| 4 | align=left | align=left | | 52.4 | Q | ||
| 5 | align=left | align=left |  | 52.6 | |||
| 6 | align=left | align=left |  | 53.4 |
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 51.3 | Q | ||
| 2 | align=left | align=left | | 51.6 | Q | ||
| 3 | align=left | align=left | 52.1 | Q | |||
| 4 | align=left | align=left | | 52.4 | Q | ||
| 5 | align=left | align=left | | 52.6 | |||
| 6 | align=left | align=left | | 52.9 |
According to an unofficial count, 23 athletes from 14 countries participated in the event.
(1) (1) (1) (1) (3) (1) (2) (1) (1) (2) (1) (3)