# 2023 European Athletics U23 Championships – Men's 400 metres

The Men's 400 metres event at the 2023 European Athletics U23 Championships was held in Espoo, Finland, at Leppävaara Stadium on 13 and 14 July.

## Records

Prior to the competition, the records were as follows:
| European U23 record | Thomas Schönlebe (GDR) | 44.33 | Rome, Italy | 3 September 1987 |
| Championship U23 record | Ricky Petrucciani (SUI) | 45.02 | Tallinn, Estonia | 10 July 2021 |

## Results
### Heats

Qualification rules: First 3 in each heat (Q) and the next 4 fastest (q) will qualify for the semi-finals.
| Rank | Heat | Name | Country | Time | Notes |
| 1 | 3 | Attila Molnár | Hungary | 45.82 | Q |
| 2 | 1 | Lorenzo Benati | Italy | 45.96 | Q |
| 3 | 2 | Håvard Bentdal Ingvaldsen | Norway | 46.12 | Q |
| 4 | 1 | Jack Raftery | Ireland | 46.20 | Q, SB |
| 5 | 3 | Omar Elkhatib | Portugal | 46.22 | Q |
| 6 | 4 | Lionel Spitz | Switzerland | 46.29 | Q |
| 7 | 1 | Andreas Grimerud | Norway | 46.39 | Q |
| 8 | 3 | Mihai Sorin Dringo | Romania | 46.40 | Q |
| 9 | 1 | Tomas Keršulis | Lithuania | 46.47 | q |
| 10 | 4 | Riccardo Meli | Italy | 46.54 | Q |
| 11 | 2 | Luca Sito | Italy | 46.61 | Q |
| 12 | 1 | Bernat Erta | Spain | 46.63 | q |
| 13 | 3 | Markel Fernandez | Spain | 46.67 | q |
| 14 | 2 | Ludovic Oucéni | France | 46.70 | Q |
| 15 | 4 | Ernő Steigerwald | Hungary | 46.78 | Q |
| 16 | 4 | Jonas Phijffers | Netherlands | 46.90 | q |
| 17 | 3 | Daniel Sołtysiak | Poland | 46.99 | |
| 18 | 2 | Brodie Young | Great Britain | 46.99 | |
| 19 | 3 | Mykyta Barabanov | Ukraine | 47.15 | |
| 20 | 2 | Emil Johansson | Sweden | 47.18 | |
| 21 | 4 | Callum Baird | Ireland | 47.26 | |
| 22 | 2 | Ilyas Çanakçi | Turkey | 47.32 | |
| 23 | 1 | Isaya Klein Ikkink | Netherlands | 47.42 | |
| 24 | 1 | Kubilay Ençü | Turkey | 47.44 | |
| 25 | 4 | Sorin Alexandru Voinea | Romania | 47.49 | |
| 26 | 2 | Manuel Bea | Spain | 47.57 | |
| 27 | 3 | Artũrs Pastors | Latvia | 47.60 | |
| 28 | 4 | Oğuzhan Kaya | Turkey | 47.76 | |
| 29 | 3 | Ivan Galușco | Moldova | 48.01 | |
| 30 | 1 | Probo Benvenuti | San Marino | 49.05 | PB |

### Semi-final

Qualification rules: First 3 in each heat (Q) and the next 2 fastest (q) will qualify for the semi-finals.
| Rank | Heat | Name | Country | Time | Notes |
| 1 | 2 | Håvard Bentdal Ingvaldsen | Norway | 45.35 | Q |
| 2 | 1 | Attila Molnár | Hungary | 45.35 | Q |
| 3 | 1 | Lionel Spitz | Switzerland | 45.50 | Q, SB |
| 4 | 2 | Mihai Sorin Dringo | Romania | 45.84 | Q |
| 5 | 1 | Jack Raftery | Ireland | 45.89 | Q, PB |
| 6 | 2 | Lorenzo Benati | Italy | 45.94 | Q |
| 7 | 2 | Omar Elkhatib | Portugal | 45.99 | q, PB |
| 8 | 1 | Tomas Keršulis | Lithuania | 46.30 | q |
| 9 | 1 | Luca Sito | Italy | 46.34 | |
| 10 | 2 | Jonas Phijffers | Netherlands | 46.60 | |
| 11 | 2 | Riccardo Meli | Italy | 46.68 | |
| 12 | 1 | Andreas Grimerud | Norway | 46.88 | |
| 13 | 1 | Markel Fernandez | Spain | 46.92 | |
| 14 | 2 | Ernő Steigerwald | Hungary | 46.92 | |
| 15 | 2 | Bernat Erta | Spain | 47.10 | |
| | 1 | Ludovic Oucéni | France | DNF | |

### Final

| Rank | Heat | Name | Country | Time | Notes |
| | 5 | Håvard Bentdal Ingvaldsen | Norway | 45.13 | |
| | 4 | Lionel Spitz | Switzerland | 45.27 | PB |
| | 7 | Attila Molnár | Hungary | 45.36 | |
| 4 | 6 | Mihai Sorin Dringo | Romania | 45.56 | SB |
| 5 | 3 | Lorenzo Benati | Italy | 45.70 | |
| 6 | 2 | Omar Elkhatib | Portugal | 45.73 | NU23R |
| 7 | 8 | Jack Raftery | Ireland | 46.00 | |
| 8 | 1 | Tomas Keršulis | Lithuania | 46.89 | |