2007 World Championships in Athletics – Women's 400 metres hurdles

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

Rank	Heat	Name	Nationality	Time	Notes
1	2	Tiffany Ross-Williams	United States	54.24	Q
2	1	Yuliya Pechenkina	Russia	54.50	Q
3	3	Tetiana Tereschuk-Antipova	Ukraine	54.74	Q, SB
4	4	Jana Rawlinson	Australia	54.77	Q
5	2	Anna Jesień	Poland	55.01	Q
6	1	Nickiesha Wilson	Jamaica	55.15	Q
7	3	Melaine Walker	Jamaica	55.40	Q
8	4	Natalia Ivanova	Russia	55.52	Q
9	5	Xiaoxiao Huang	China	55.64	Q
10	3	Fani Chalkia	Greece	55.66	Q, SB
11	1	Tasha Danvers-Smith	United Kingdom	55.67	Q
12	4	Muna Jabir Adam	Sudan	55.80	Q
13	3	Zuzana Hejnová	Czech Republic	55.87	Q, SB
14	4	Ionela Târlea-Manolache	Romania	55.90	Q, SB
15	2	Tatyana Azarova	Kazakhstan	55.93	Q
15	4	Kaliese Spencer	Jamaica	55.93	q
17	1	Nicole Leach	United States	55.95	Q
18	5	Yevgeniya Isakova	Russia	56.02	Q
19	3	Erica Mårtensson	Sweden	56.19	q, PB
20	3	Yekaterina Bikert	Russia	56.23	q
21	5	Sheena Johnson	United States	56.30	Q
22	1	Hristína Hantzi-Neag	Greece	56.37	q
23	3	Élodie Ouédraogo	Belgium	56.44
24	3	Ulrike Urbansky	Germany	56.76
25	2	Tsvetelina Kirilova	Bulgaria	56.77	Q
26	1	Satomi Kubokura	Japan	57.01
27	2	Aïssata Soulama	Burkina Faso	57.06
28	3	Michelle Carey	Ireland	57.10
29	5	Christina Kron	Germany	57.28	Q
30	2	Anastasiya Rabchenyuk	Ukraine	57.31
31	2	Özge Gürler	Turkey	57.40
32	1	Ilona Ranta	Finland	57.64
33	5	Andrea Blackett	Barbados	57.70
34	5	Lamiae Lhabze	Morocco	57.81
35	5	Lucimar Teodoro	Brazil	58.32
36	4	Muizat Ajoke Odumosu	Nigeria	59.05
37	1	Nadia Nazir	Pakistan	1:04.76	PB

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

Rank	Heat	Name	Nationality	Time	Notes
1	1	Jana Rawlinson	Australia	53.57	Q
2	2	Yuliya Pechenkina	Russia	53.82	Q
3	3	Anna Jesień	Poland	53.86	Q, NR
4	3	Nickiesha Wilson	Jamaica	53.97	Q, PB
5	2	Xiaoxiao Huang	China	54.00	Q, PB
6	1	Tasha Danvers-Smith	United Kingdom	54.08	Q, SB
7	1	Yevgeniya Isakova	Russia	54.11	q, SB
8	3	Tiffany Ross-Williams	United States	54.15	q
9	1	Tetiana Tereschuk-Antipova	Ukraine	54.38	SB
10	2	Melaine Walker	Jamaica	54.54
11	1	Sheena Johnson	United States	54.55
12	3	Natalya Ivanova	Russia	54.88
13	1	Zuzana Hejnová	Czech Republic	55.04	NR
14	3	Ionela Târlea-Manolache	Romania	55.41	SB
15	3	Muna Jabir Adam	Sudan	55.65
16	2	Tatyana Azarova	Kazakhstan	55.74
17	3	Tsvetelina Kirilova	Bulgaria	56.03	PB
18	2	Christina Kron	Germany	56.05
19	2	Nicole Leach	United States	56.10
20	3	Hristina Hantzi-Neag	Greece	56.35
21	1	Erica Mårtensson	Sweden	56.46
22	2	Fani Chalkia	Greece	56.58
23	1	Kaliese Spencer	Jamaica	56.69
24	2	Yekaterina Bikert	Russia	1:00.07