# Athletics at the 2021 Summer World University Games – Men's 400 metres hurdles

The men's 400 metres hurdles event at the 2021 Summer World University Games was held on 2, 3 and 4 August 2023 at the Shuangliu Sports Centre Stadium in Chengdu, China.

## Medalists

| Gold | Silver | Bronze |
| Peng Ming-yang Chinese Taipei | İsmail Nezir Turkey | Xie Zhiyu China |

## Results
### Round 1

Qualification: First 3 in each heat (Q) and the next 4 fastest (q) advance to semifinal.

#### Heat 1

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 8 | Gabriele Montefalcone | Italy | 49.99 | Q |
| 2 | 6 | Peng Ming-yang | Chinese Taipei | 50.16 | Q |
| 3 | 1 | Jakub Olejniczak | Poland | 50.39 | Q |
| 4 | 4 | Calvin Quek | Singapore | 50.43 | q, PB |
| 5 | 7 | Mohammed Al-Muawi | Saudi Arabia | 50.59 | q |
| 6 | 2 | Vyacheslav Zems | Kazakhstan | 51.83 | |
| 7 | 5 | Samuel Wiik | Sweden | 53.14 | |
| 8 | 3 | Pravin Peter | India | 53.73 | |
| Source: ||||||

#### Heat 2

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 1 | Song Jiahui | China | 50.45 | Q |
| 2 | 7 | İsmail Nezir | Turkey | 51.16 | Q |
| 3 | 5 | Rivaldo Leacock | Barbados | 51.32 | Q |
| 4 | 3 | Wernich van Rensburg | South Africa | 51.45 | |
| 5 | 4 | Rusleen Roseli | Malaysia | 52.77 | |
| 6 | 6 | Rohith Arambam | India | 53.12 | |
| 7 | 2 | Jordan Santos | Brazil | 53.46 | |
| — | 8 | Jake Calucag | Philippines | DNF | |
| Source: ||||||

#### Heat 3

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 5 | Xie Zhiyu | China | 50.09 | Q |
| 2 | 2 | Lindukuhle Gora | South Africa | 50.20 | Q |
| 3 | 6 | Mehdi Pirjahan | Iran | 50.22 | Q |
| 4 | 3 | Adam Smolka | Czech Republic | 50.35 | q |
| 5 | 8 | Chen Jian-rong | Chinese Taipei | 52.03 | |
| 6 | 4 | Gustav Karlsson | Sweden | 52.62 | |
| 7 | 1 | Levente Soós | Hungary | 53.12 | |
| — | 7 | Busani Ndlovu | Zimbabwe | DNS | |
| Source: ||||||

#### Heat 4

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 7 | Berke Akçam | Turkey | 50.57 | Q |
| 2 | 6 | Krzysztof Hołub | Poland | 50.91 | Q |
| 3 | 2 | Matej Baluch | Slovakia | 51.17 | Q |
| 4 | 1 | Natthaphon Dansungnoen | Thailand | 51.25 | q |
| 5 | 4 | Leo Köhldorfer | Austria | 51.98 | |
| 6 | 3 | Tshotlego Frecky | Botswana | 52.52 | |
| 7 | 5 | Joshua Adhémar | Haiti | 52.55 | |
| — | 8 | Vincent Lopez | United States | DQ | TR16.8 |
| Source: ||||||

### Semifinal

Qualification: First 3 in each heat (Q) and the next 2 fastest (q) advance to final.

#### Heat 1

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 5 | Peng Ming-yang | Chinese Taipei | 48.97 | Q, PB |
| 2 | 4 | Berke Akçam | Turkey | 49.08 | Q |
| 3 | 7 | Xie Zhiyu | China | 49.25 | Q |
| 4 | 3 | Mehdi Pirjahan | Iran | 49.33 | q, PB |
| 5 | 6 | Krzysztof Hołub | Poland | 49.36 | q, PB |
| 6 | 1 | Natthaphon Dansungnoen | Thailand | 50.71 | PB |
| 7 | 2 | Adam Smolka | Czech Republic | 51.41 | |
| 8 | 8 | Rivaldo Leacock | Barbados | 51.66 | |
| Source: ||||||

#### Heat 2

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 7 | Gabriele Montefalcone | Italy | 49.15 | Q, PB |
| 2 | 6 | İsmail Nezir | Turkey | 49.51 | Q |
| 3 | 5 | Lindukuhle Gora | South Africa | 49.57 | Q, PB |
| 4 | 3 | Matej Baluch | Slovakia | 49.59 | |
| 5 | 3 | Song Jiahui | China | 49.79 | SB |
| 6 | 2 | Mohammed Al-Muawi | Saudi Arabia | 49.92 | PB |
| 7 | 8 | Jakub Olejniczak | Poland | 50.03 | PB |
| 8 | 1 | Calvin Quek | Singapore | 51.77 | |
| Source: ||||||

### Final

| Rank | Lane | Athlete | Nation | Time | Notes |
| | 5 | Peng Ming-yang | Chinese Taipei | 48.62 | PB |
| | 7 | İsmail Nezir | Turkey | 48.72 | PB |
| | 8 | Xie Zhiyu | China | 48.78 | PB |
| 4 | 4 | Berke Akçam | Turkey | 48.93 | |
| 5 | 6 | Gabriele Montefalcone | Italy | 49.36 | |
| 6 | 1 | Mehdi Pirjahan | Iran | 49.53 | |
| 7 | 2 | Krzysztof Hołub | Poland | 50.04 | |
| — | 3 | Lindukuhle Gora | South Africa | DQ | TR22.6.1 |
| Source: ||||||