Women's 400m Freestyle at the 2003 FINA World Aquatics Championships
Venue	Palau Sant Jordi
Dates	20 July (prelims and final)
Winning time	4 minutes 6.75 seconds
Medalists
Hannah Stockbauer    Germany   Éva Risztov    Hungary   Diana Munz    United States
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The Women's 400m Freestyle event at the 10th FINA World Aquatics Championships swam on 20 July 2003 in Barcelona, Spain. Preliminary^[1] heats swam during the day's morning session, with the top-8 finishers advancing to swim again in the Final^[2] during the evening session.

Prior to the event, the World (WR) and Championship (CR) records were:

• WR: 4:03.85 swum by Janet Evans (USA) on September 22, 1988, in Seoul, South Korea
• CR: 4:06.28 swum by Tracey Wickham (Australia) on August 24, 1978, in Berlin, Germany

Place	Swimmer	Nation	Time	Notes
1	Hannah Stockbauer	Germany	4:06.75
2	Éva Risztov	Hungary	4:07.24
3	Diana Munz	USA	4:07.67
4	Elka Graham	Australia	4:08.60
5	Brittany Reimer	Canada	4:09.34
6	Lindsay Benko	USA	4:09.82
7	Simona Păduraru	Romania	4:13.62
8	Hua Chen	China	4:13.75

Rank	Heat+Lane	Swimmer	Nation	Time	Notes
1	H5 L5	Hannah Stockbauer	Germany	4:09.78	q
2	H5 L4	Diana Munz	United States	4:09.90	q
3	H6 L4	Éva Risztov	Hungary	4:10.41	q
4	H5 L6	Elka Graham	Australia	4:10.58	q
5	H6 L5	Hua Chen	China	4:11.07	q
5	H6 L3	Simona Păduraru	Romania	4:11.07	q
7	H4 L5	Lindsay Benko	United States	4:11.20	q
8	H4 L6	Brittany Reimer	Canada	4:11.55	q
9	H4 L4	Sashiko Yamada	Japan	4:12.29
10	H5 L3	Jana Henke	Germany	4:12.32
11	H6 L2	Zoi Dimoschaki	Greece	4:12.48
12	H6 L6	Rebecca Cooke	Great Britain	4:12.51
13	H4 L3	Laure Manaudou	France	4:12.66
14	H5 L7	Ai Shibata	Japan	4:13.78
15	H6 L7	Regina Sytch	Russia	4:13.79
16	H5 L2	Erika Villaécija	Spain	4:14.10
17	H4 L2	Linda Mackenzie	Australia	4:14.36
18	H5 L1	Melissa Caballero	Spain	4:14.47
19	H3 L4	Mariana Brochado	Brazil	4:15.29
20	H3 L5	Chantal Strasser	Switzerland	4:15.44
21	H6 L1	Daria Parshina	Russia	4:15.63
22	H4 L8	Anja Čarman	Slovenia	4:16.70
23	H3 L3	Marianna Lymperta	Greece	4:17.42
24	H3 L2	Vesna Stojanvoska	Macedonia	4:17.52
25	H5 L8	Jingzhi Tang	China	4:17.77
26	H6 L8	Melissa Corfe	South Africa	4:18.41
27	H4 L7	Monique Ferreira	Brazil	4:18.90
28	H4 L1	Jana Pechanová	Czech Republic	4:18.93
29	H3 L8	Alison Fitch	New Zealand	4:20.38
30	H3 L6	Olga Beresneva	Ukraine	4:23.03
31	H3 L1	Pilin Tachakittiraran	Thailand	4:23.80
32	H1 L5	Maria Albert	Estonia	4:24.08
33	H2 L5	Kristel Köbrich	Chile	4:24.53
34	H3 L7	Marta Ferreira	Portugal	4:25.38
35	H2 L3	Golda Marcus	El Salvador	4:28.03
36	H2 L1	Johana Rodriguez	Costa Rica	4:36.43
37	H2 L2	Magdalena Sutanto	Indonesia	4:37.45
38	H2 L4	Andrea De León	Uruguay	4:39.07
39	H2 L7	Roberta Callus	Malta	4:42.71
40	H2 L6	Sivranjani Vaidyanathan	India	4:42.89
41	H1 L4	Man Wai Fong	Macau	4:50.53
-	-	Corise Nyenimigabo	Burundi	DNS