Athletics at the 2007 Summer Universiade – Men's 400 metres hurdles

Qualification: First 3 of each heat (Q) and the next 4 fastest (q) qualified for the semifinals.

Rank	Heat	Name	Nationality	Time	Notes
1	2	Vladimir Antmanis	Russia	50.36	Q
2	3	El Hadji Sethe Mbow	Senegal	50.42	Q
3	2	Ockert Cilliers	South Africa	50.44	Q
4	4	Kurt Couto	Mozambique	50.48	Q
5	3	Raphael Fernandes	Brazil	50.52	Q
6	1	Javier Culson	Puerto Rico	50.58	Q
7	2	Yasuhiro Fueki	Japan	50.69	Q
8	3	Michal Uhlík	Czech Republic	50.73	Q
9	4	Ben Carne	Great Britain	50.76	Q
10	4	Yevgeniy Meleshenko	Kazakhstan	50.91	Q
11	2	Abderahmane Hamadi	Algeria	51.23	q, SB
12	3	Ou Yongjian	China	51.36	q
13	2	Jussi Heikkilä	Finland	51.37	q
14	1	Steven Green	Great Britain	51.44	Q
15	4	Markus Crepaz	Italy	51.47	q
16	1	Petrus Koekemoer	South Africa	52.03	Q
17	3	Tuncay Örs	Turkey	52.36
18	3	Camilo Quevedo	Guatemala	52.43
19	1	Bojan Maljković	Serbia	52.56
20	1	Denis Byvakin	Russia	52.65
21	2	Teeraporn Parkum	Thailand	53.17
22	1	Nicola Cascella	Italy	53.27
23	4	Jon Bentsen	Denmark	54.06
24	2	Mart Kroodo	Estonia	54.51
25	4	Horatius Abrahams	Namibia	55.51
26	3	Heditiana Rampy Andrianjaka	Malaysia	56.98
	1	Apisit Kuttiyawan	Thailand	DNS
	4	Jermiah Shule	Kenya	DNS

Qualification: First 4 of each semifinal qualified directly (Q) for the final.

Rank	Heat	Name	Nationality	Time	Notes
1	2	Javier Culson	Puerto Rico	49.68	Q
2	1	Yevgeniy Meleshenko	Kazakhstan	49.71	Q, SB
3	1	Kurt Couto	Mozambique	50.04	Q, SB
4	1	Petrus Koekemoer	South Africa	50.09	Q
5	2	Ockert Cilliers	South Africa	50.23	Q
6	1	Michal Uhlík	Czech Republic	50.26	Q
7	2	Vladimir Antmanis	Russia	50.32	Q
8	1	El Hadji Sethe Mbow	Senegal	50.58
9	2	Steven Green	Great Britain	50.59	Q
10	1	Ben Carne	Great Britain	50.61
11	2	Yasuhiro Fueki	Japan	51.02
12	2	Jussi Heikkilä	Finland	51.04
13	1	Raphael Fernandes	Brazil	51.06	FS1
14	1	Ou Yongjian	China	51.23
15	2	Markus Crepaz	Italy	51.30
16	2	Abderahmane Hamadi	Algeria	56.78