Athletics at the 2009 Summer Universiade – Men's 400 metres
The men's 400 metres event at the 2009 Summer Universiade was held on 7–9 July.
Medalists
Results
Heats
Qualification: First 2 of each heat and the next 8 fastest qualified for the semifinals.| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 5 | Yuzo Kanemaru | 46.51 | Q | |
| 2 | 4 | Kacper Kozłowski | 46.55 | Q | |
| 3 | 4 | Clay Watkins | 46.56 | Q | |
| 4 | 4 | Hideyuki Hirose | 46.65 | q | |
| 5 | 6 | Clemens Zeller | 46.86 | Q | |
| 6 | 4 | Sibusiso Sishi | 47.01 | q | |
| 7 | 6 | Peter Znava | 47.14 | Q | |
| 8 | 1 | Arnaud Ghislain | 47.16 | Q | |
| 9 | 1 | Nathan Vadeboncoeur | 47.20 | Q | |
| 10 | 5 | Fayçal Cherifi | 47.25 | Q | |
| 11 | 5 | Artem Sergeenkov | 47.26 | q, SB | |
| 12 | 3 | Nils Duerinck | 47.28 | Q | |
| 13 | 2 | Daniel Harper | 47.32 | Q | |
| 14 | 6 | Aleksander Sigalovskiy | 47.35 | q, SB | |
| 15 | 8 | Takeshi Fujiwara | 47.40 | Q | |
| 16 | 3 | Pieter Smith | 47.47 | Q | |
| 17 | 3 | Miloud Rahmani | 47.48 | q | |
| 18 | 2 | Andrew Moore | 47.52 | Q | |
| 19 | 8 | Joāo Ferreira | 47.56 | Q | |
| 19 | 2 | Marco Vistalli | 47.56 | q | |
| 21 | 8 | Petr Szetei | 47.63 | q, PB | |
| 22 | 8 | Pantelis Melahrinoudis | 47.66 | q | |
| 23 | 6 | Ali Ekber Kayaş | 47.68 | ||
| 24 | 8 | Emmanuel Tugumisirize | 47.80 | PB | |
| 25 | 5 | You Cheng | 47.93 | ||
| 26 | 2 | Marouane El Madadi | 47.96 | ||
| 26 | 3 | Jarosław Wasiak | 47.96 | ||
| 28 | 7 | Chris Troode | 48.08 | Q | |
| 29 | 1 | Riis Jacob Fabricius | 48.16 | ||
| 30 | 4 | Gary Robinson | 48.51 | SB | |
| 31 | 2 | Henri Sool | 48.53 | ||
| 32 | 5 | Krasimir Braikov | 48.57 | ||
| 33 | 5 | Miloš Simović | 48.67 | ||
| 34 | 1 | Robert Muci | 48.75 | ||
| 35 | 7 | Domenico Fontana | 48.99 | Q | |
| 36 | 7 | Bernard Adams | 49.33 | ||
| 37 | 3 | Ali Hazer | 49.41 | ||
| 38 | 6 | Chang Pengben | 49.48 | ||
| 39 | 7 | Muhammad Nabeel | 49.60 | ||
| 40 | 2 | Nejc Radojčič | 49.85 | ||
| 41 | 6 | Thapelo Ketlogetswe | 50.37 | ||
| 42 | 7 | Aymar Oboba Fleury | 50.38 | ||
| 43 | 1 | Boris Suslovski | 50.41 | ||
| 44 | 4 | Stefan Bečanović | 51.17 | ||
| 45 | 8 | Hammam Al-Farsi | 51.23 | ||
| 46 | 5 | Stevan Kosorić | 51.31 | ||
| 47 | 8 | Dritan Musta | 52.47 | ||
| 48 | 1 | Said Al-Katheri | 55.15 | ||
| 49 | 6 | Chan Chon In | 55.24 | ||
| 50 | 3 | Fahad Ahmadm Al-Furhood | |||
| 2 | Sulaiman Khalafs Al-Dowaighri | ||||
| 1 | Dmitry Pedan | ||||
| 4 | Daniel Christensen | ||||
| 6 | Charles Shaw | ||||
| 7 | Bob Niamali | ||||
| 7 | Ehsan Tahmasebi | ||||
| 8 | Adeleye Ogunmakinju |
Semifinals
Qualification: First 2 of each semifinal and the next 2 fastest qualified for the finals.| Rank | Heat | Name | Nationality | Time | Notes |
| 1 | 2 | Chris Troode | 45.79 | Q, SB | |
| 2 | 3 | Clemens Zeller | 46.33 | Q | |
| 3 | 2 | Kacper Kozłowski | 46.40 | Q | |
| 4 | 1 | Yuzo Kanemaru | 46.48 | Q | |
| 5 | 2 | Petr Szetei | 46.58 | q, PB | |
| 6 | 3 | Marco Vistalli | 46.64 | Q, PB | |
| 7 | 3 | Arnaud Ghislain | 46.81 | q | |
| 8 | 2 | Hideyuki Hirose | 46.84 | ||
| 9 | 1 | Daniel Harper | 46.93 | Q | |
| 10 | 1 | Sibusiso Sishi | 46.98 | ||
| 11 | 2 | Nathan Vadeboncoeur | 46.99 | ||
| 12 | 3 | Clay Watkins | 47.04 | ||
| 13 | 3 | Peter Znava | 47.18 | ||
| 14 | 2 | Nils Duerinck | 47.24 | ||
| 15 | 3 | Miloud Rahmani | 47.26 | ||
| 16 | 2 | Andrew Moore | 47.36 | ||
| 17 | 1 | Takeshi Fujiwara | 47.43 | ||
| 18 | 1 | Domenico Fontana | 47.45 | PB | |
| 19 | 1 | Artem Sergeenkov | 47.61 | ||
| 20 | 1 | Pantelis Melahrinoudis | 47.64 | ||
| 21 | 3 | Pieter Smith | 47.67 | ||
| 22 | 1 | Fayçal Cherifi | 47.88 | ||
| 23 | 2 | Aleksander Sigalovskiy | 48.04 | ||
| 24 | 3 | Joāo Ferreira | 48.22 |