Athletics at the 2011 Summer Universiade – Men's 400 metres
The men's 400 metres event at the 2011 Summer Universiade was held on 11–13 August.
Medalists
Results
Heats
Qualification: First 2 in each heat and 8 best performers advance to the Semifinals.| Rank | Heat | Name | Nationality | Time | Notes |
| 6 | Peter Matthews | 46.35 | Q | ||
| 8 | Brian Gregan | 46.37 | Q | ||
| 2 | Joey Jacob Hughes | 46.37 | Q | ||
| 8 | Obakeng Ngwigwa | 46.48 | Q, SB | ||
| 2 | Serdar Tamaç | 46.55 | Q | ||
| 4 | Valentin Kruglyakov | 46.57 | Q | ||
| 2 | Thapelo Ketlogetswe | 46.72 | q | ||
| 2 | Emmanuel Tugumisirize | 46.77 | q, PB | ||
| 4 | Willem de Beer | 46.85 | Q | ||
| 10 | 8 | Shane Victor | 46.90 | q | |
| 11 | 4 | Yavuz Can | 46.94 | q | |
| 12 | 5 | Chang Pengben | 46.98 | Q | |
| 12 | 3 | Sean Wroe | 46.98 | Q | |
| 14 | 6 | Hiroyuki Nakano | 47.08 | Q | |
| 15 | 7 | Augusto Stanley | 47.11 | Q | |
| 16 | 5 | Anderson Henriques | 47.12 | Q | |
| 17 | 6 | Michael Robertson | 47.20 | q | |
| 17 | 5 | Rafith Rodríguez | 47.20 | q | |
| 19 | 1 | Marcell Deák-Nagy | 47.23 | Q | |
| 20 | 1 | Liemarvin Bonevacia | 47.25 | Q | |
| 21 | 1 | Dmitry Buryak | 47.29 | q | |
| 22 | 3 | Hideyuki Hirose | 47.36 | Q | |
| 23 | 3 | Nicklas Hyde | 47.39 | q | |
| 24 | 4 | Su Ronghai | 47.42 | ||
| 25 | 7 | Antoine Gillet | 47.46 | Q | |
| 26 | 7 | Krasimir Braykov | 47.53 | ||
| 27 | 1 | Jānis Baltušs | 47.84 | ||
| 28 | 6 | Jacob Riis | 47.94 | ||
| 29 | 5 | Yuvaraaj Panerselvam | 48.22 | ||
| 30 | 4 | Lee Moo-Yong | 48.29 | ||
| 31 | 5 | Jonas Andre Grønnhaug | 48.54 | ||
| 32 | 7 | Martin Zacests | 48.76 | ||
| 33 | 2 | Gary Robinson | 48.95 | ||
| 34 | 8 | Muhammad Yunus Lasaleh | 49.16 | ||
| 35 | 5 | Ramzi Naim | 49.17 | PB | |
| 35 | 6 | Gideon Ernst Narib | 49.17 | ||
| 37 | 3 | Seong Hyeok-Je | 49.18 | ||
| 38 | 8 | Julio Pérez | 49.19 | ||
| 39 | 2 | Rivar Tipp | 49.38 | ||
| 40 | 8 | Manqoba Benni Nyoni | 49.59 | ||
| 41 | 6 | Pius Ocilaje | 49.64 | ||
| 42 | 2 | Ratutira Narara | 49.71 | ||
| 43 | 6 | Hamad Albadwawi | 49.73 | ||
| 44 | 7 | Hussain Ahmed Masrahi | 50.65 | ||
| 45 | 5 | Christopher Svensson | 51.05 | ||
| 46 | 8 | Hammam Hassan Al Farsi | 51.24 | ||
| 47 | 3 | Pule Rantseli | 51.27 | ||
| 48 | 1 | James Anyona Getengah | 51.81 | ||
| 49 | 3 | Dennis Chelimo | 52.25 | ||
| 50 | 7 | Sathasivam Sivashanger | 52.65 | ||
| 51 | 1 | Bob Niamali Madrakile | 53.29 | ||
| 52 | 6 | Lei Honweng | 53.77 | ||
| 53 | 4 | Mohammedd Abdul Momin Mamun | 54.04 | ||
| 54 | 3 | Chang Infong | 54.07 | ||
| 55 | 1 | Jason McCaffrey | 55.22 | ||
| 56 | 7 | Ahmed Said Al Azri | |||
| 4 | Mohammed Abubakari | ||||
| 8 | Robert Annak | ||||
| 7 | Marc Orozco |
Semifinals
Qualification: First 2 of each semifinal and the next 2 fastest qualified for the final.| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 1 | Marcell Deák-Nagy | 45.86 | Q | |
| 2 | 1 | Sean Wroe | 45.98 | Q, SB | |
| 3 | 2 | Brian Gregan | 46.00 | Q, PB | |
| 4 | 1 | Joey Jacob Hughes | 46.06 | q | |
| 5 | 2 | Valentin Kruglyakov | 46.07 | Q, SB | |
| 6 | 3 | Anderson Henriques | 46.14 | Q | |
| 7 | 3 | Peter Matthews | 46.21 | Q | |
| 8 | 2 | Obakeng Ngwigwa | 46.47 | q | |
| 9 | 3 | Shane Victor | 46.48 | ||
| 10 | 1 | Yavuz Can | 46.55 | PB | |
| 11 | 1 | Willem de Beer | 46.59 | ||
| 12 | 3 | Hiroyuki Nakano | 46.61 | ||
| 13 | 3 | Chang Pengben | 46.73 | ||
| 14 | 1 | Dmitry Buryak | 46.84 | ||
| 15 | 3 | Emmanuel Tugumisirize | 46.91 | ||
| 16 | 2 | Serdar Tamaç | 46.98 | ||
| 17 | 2 | Hideyuki Hirose | 47.07 | ||
| 18 | 3 | Augusto Stanley | 47.16 | ||
| 19 | 2 | Antoine Gillet | 47.37 | ||
| 20 | 3 | Nicklas Hyde | 47.50 | ||
| 21 | 2 | Michael Robertson | 47.52 | ||
| 22 | 1 | Liemarvin Bonevacia | 48.26 | ||
| 2 | Rafith Rodríguez | ||||
| 1 | Thapelo Ketlogetswe | FS |
Final
| Rank | Lane | Name | Nationality | Time | Notes |
| 3 | Marcell Deák-Nagy | 45.50 | |||
| 8 | Peter Matthews | 45.62 | PB | ||
| 6 | Sean Wroe | 45.93 | SB | ||
| 4 | 7 | Valentin Kruglyakov | 45.94 | PB | |
| 5 | 5 | Brian Gregan | 45.96 | PB | |
| 6 | 2 | Joey Jacob Hughes | 45.99 | ||
| 7 | 4 | Anderson Henriques | 46.01 | ||
| 8 | 1 | Obakeng Ngwigwa | 46.51 |