# Swimming at the 2001 World Aquatics Championships – Women's 4 × 100 metre medley relay

The women's 4 × 100 metre medley relay event at the 2001 World Aquatics Championships took place in Marine Messe in Fukuoka, Japan in 29 July 2001.

## Records

Prior to the competition, the existing world and championship records were as follows.
| | Nation | Time | Location | Date |
| World record | United States Barbara Bedford (1:01.39) Megan Quann (1:06.29) Jenny Thompson (57.25) Dara Torres (53.37) | 3:58.30 | Sydney | 23 Sep 2000 |
| Championship record | China He Cihong (1:00.16) Dai Guohong (1:09.03) Liu Limin (58.65) Le Jingyi (53.54) | 4:01.67 | Rome | 10 Sep 1994 |
The following record was established during the competition:
| Date | Round | Nation | Time | Record |
| 29 July 2001 | Final | Australia Dyana Calub (1:02.80) Leisel Jones (1:07.68) Petria Thomas (57.65) Sarah Ryan (54.09) | 4:01.50 | CR |

## Results
### Heats

| Place | Heat | Lane | Nation | Swimmers (split) | Time | Notes |
| 1 | 3 | 5 | Germany | Antje Buschschulte (1:01.27) Simone Karn (1:09.77) Annika Mehlhorn (58.09) Katrin Meissner (55.32) | 4:04.45 | Q |
| 2 | 3 | 4 | United States | Courtney Shealy (1:03.13) Megan Quann (1:07.22) Shelly Ripple-Johnston (59.08) Maritza Correia (55.64) | 4:05.07 | Q |
| 3 | 2 | 5 | China | Zhan Shu (1:02.67) Luo Xuejuan (1:08.43) Ruan Yi (1:00.00) Xu Yanwei (54.60) | 4:05.70 | Q |
| 4 | 2 | 4 | Australia | Clementine Stoney (1:03.03) Tarnee White (1:10.00) Petria Thomas (57.95) Elka Graham (56.05) | 4:07.03 | Q |
| 5 | 1 | 4 | Japan | Mai Nakamura (1:02.37) Junko Isoda (1:10.07) Junko Onishi (59.55) Sumika Minamoto (55.38) | 4:07.37 | Q |
| 6 | 1 | 5 | United Kingdom | Sarah Price (1:01.80) Jaime King (1:10.18) Georgina Lee (1:00.42) Karen Pickering (55.16) | 4:07.56 | Q |
| 7 | 1 | 3 | Russia | Stanislava Komarova (1:02.13) Olga Bakaldina (1:10.48) Irina Bespalova (59.67) Inna Yaitskaya (56.00) | 4:08.28 | Q |
| 8 | 2 | 3 | Canada | Jennifer Fratesi (1:02.90) Rhiannon Leier (1:09.59) Audrey Lacroix (1:00.63) Laura Nicholls (55.46) | 4:08.58 | Q |
| 9 | 2 | 7 | Denmark | Louise Ørnstedt (1:02.51) Majken Thorup (1:10.39) Sophia Skou (1:00.04) Mette Jacobsen (55.75) | 4:08.69 | |
| 10 | 3 | 3 | Sweden | Therese Alshammar (1:04.71) Emma Igelström (1:09.81) Johanna Sjöberg (59.64) Josefin Lillhage (55.88) | 4:10.04 | |
| 11 | 3 | 2 | Romania | Valentina Brat (1:03.89) Beatrice Câșlaru (1:09.77) Diana Mocanu (1:00.66) Camelia Potec (56.74) | 4:11.06 | |
| 12 | 3 | 6 | Netherlands | Hinkelien Schreuder (1:02.99) Madelon Baans (1:09.32) Chantal Groot (1:02.91) Manon van Rooijen (56.02) | 4:11.24 | |
| 13 | 1 | 6 | Italy | Alessandra Cappa (1:04.18) Roberta Crescentini (1:11.36) Sara Parise (1:00.70) Cecilia Vianini (55.29) | 4:11.53 | |
| 14 | 2 | 2 | Singapore | Denyse Tan (1:10.09) Nicolette Teo (1:12.39) Christel Bouvron (1:04.95) Jacqueline Lim (58.90) | 4:26.33 | |
| 15 | 1 | 2 | Chinese Taipei | Yang Chin-Kuei (1:08.19) Chen Yi-Fan (1:18.86) Kuan Chia-Hsien (1:05.48) Sung Yi-Chien (1:00.74) | 4:33.27 | |
| 16 | 3 | 7 | Macau | Shun Kwan Andrea Chum (1:13.83) Weng Lam Cheong (1:18.92) Weng Tong Cheong (1:07.71) Wai Man Lam (1:04.87) | 4:45.33 | |
| – | 2 | 6 | Switzerland | Dominique Diezi (1:03.93) Carmela Schlegel Agata Czaplicki Nicole Zahnd | DSQ | |

### Final

| Place | Lane | Nation | Swimmers (split) | Time | Notes |
| | 6 | Australia | Dyana Calub (1:02.80) Leisel Jones (1:07.68) Petria Thomas (57.65) Sarah Ryan (54.09) | 4:01.50 | CR, OC |
| | 5 | United States | Natalie Coughlin (1:00.18) Megan Quann (1:07.67) Mary Descenza (59.59) Erin Phenix (54.37) | 4:01.81 | |
| | 3 | China | Zhan Shu (1:01.97) Luo Xuejuan (1:06.47) Ruan Yi (59.74) Xu Yanwei (54.35) | 4:02.53 | |
| 4 | 4 | Germany | Antje Buschschulte (1:01.07) Simone Karn (1:09.58) Annika Mehlhorn (58.59) Katrin Meissner (53.82) | 4:03.06 | |
| 5 | 2 | Japan | Mai Nakamura (1:01.97) Junko Isoda (1:10.14) Junko Onishi (59.14) Sumika Minamoto (55.19) | 4:06.44 | |
| 6 | 7 | United Kingdom | Sarah Price (1:01.84) Jaime King (1:09.86) Nicola Jackson (59.85) Rosalind Brett (55.11) | 4:06.66 | |
| 7 | 1 | Russia | Stanislava Komarova (1:02.06) Elena Bogomazova (1:10.05) Natalia Soutiagina (59.32) Inna Yaitskaya (56.15) | 4:07.58 | |
| 8 | 8 | Canada | Jennifer Fratesi (1:02.62) Rhiannon Leier (1:09.85) Audrey Lacroix (1:00.26) Laura Nicholls (55.37) | 4:08.10 | |