# Swimming at the 2009 World Aquatics Championships – Women's 4 × 100 metre medley relay

The Women's 4x100m Medley Relay at the 2009 World Aquatics Championships took place on August 1, 2009 at the Foro Italico in Rome, Italy.

## Records

Prior to this competition, the existing world and competition records were as follows:
| World Record | Australia (AUS) Emily Seebohm (59.33) Leisel Jones (1:04.58) Jessicah Schipper (56.25) Libby Trickett (52.53) | 3:52.69 | Beijing, China | 17 August 2008 |
| Championship Record | Australia (AUS) Emily Seebohm (1:00.79) Leisel Jones (1:04.94) Jessicah Schipper (57.18) Libby Trickett (52.83) | 3:55.74 | Melbourne, Australia | 31 March 2007 |
The following records were established during the competition:
| Date | Event | Name | Nation | Time | Record |
| 1 August | Final | Zhao Jing (58.98) Chen Huijia (1:04.12) Jiao Liuyang (56.28) Li Zhesi (52.81) | China (CHN) | 3:52.19 | WR |

## Results
### Heats

| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 2 | 4 | China | Zhao Jing (1:00.24) Chen Huijia (1:05.04) Jiao Liuyang (56.92) Li Zhesi (53.94) | 3:56.14 | |
| 2 | 2 | 5 | Japan | Shiho Sakai (59.47) Nanaka Tamura (1:06.55) Yuka Kato (57.45) Haruka Ueda (53.97) | 3:57.44 | NR |
| 3 | 2 | 3 | Germany | Daniela Samulski (1:00.16) Sarah Poewe (1:06.74) Annika Mehlhorn (57.36) Daniela Schreiber (53.49) | 3:57.75 | NR |
| 4 | 2 | 6 | Netherlands | Femke Heemskerk (1:01.28) NR Lia Dekker (1:07.41) Inge Dekker (56.95) Ranomi Kromowidjojo (52.41) | 3:58.05 | NR |
| 5 | 4 | 5 | Great Britain | Gemma Spofforth (59.58) Lowri Tynan (1:07.51) Ellen Gandy (57.80) Francesca Halsall (53.29) | 3:58.18 | |
| 6 | 4 | 3 | Canada | Julia Wilkinson (1:00.69) Annamay Pierse (1:06.10) Audrey Lacroix (57.70) Geneviève Saumur (53.74) | 3:58.23 | NR |
| 7 | 4 | 4 | Australia | Emily Seebohm (59.65) Sally Foster (1:07.32) Stephanie Rice (57.29) Shayne Reese (54.10) | 3:58.36 | |
| 8 | 4 | 6 | Brazil | Fabíola Molina (1:00.08) SA Carolina Mussi (1:08.31) Gabriella Silva (56.25) Tatiana Lemos (53.85) | 3:58.49 | SA |
| 9 | 3 | 2 | Denmark | Pernille Jessing Larsen (1:01.63) Rikke Møller Pedersen (1:06.59) Micha Kathrine Østergaard Jensen (57.82) Jeanette Ottesen (52.89) | 3:58.93 | NR |
| 10 | 3 | 4 | United States | Elizabeth Pelton (1:00.78) Kasey Carlson (1:06.79) Christine Magnuson (57.29) Julia Smit (54.15) | 3:59.01 | |
| 11 | 3 | 3 | Sweden | Sarah Sjöström (1:00.74) NR Joline Höstman (1:08.27) Gabriella Fagundez (58.44) Josefin Lillhage (53.59) | 4:01.04 | NR |
| 12 | 3 | 6 | France | Esther Baron (1:01.53) Fanny Babou (1:08.44) Aurore Mongel (57.69) Malia Metella (53.39) | 4:01.05 | NR |
| 13 | 3 | 5 | Russia | Maria Gromova (1:00.33) Valentina Artemyeva (1:08.30) Irina Bespalova (57.64) Olga Klyuchnikova (54.82) | 4:01.09 | |
| 14 | 4 | 7 | Hungary | Eszter Dara (1:01.07) Réka Pecz (1:09.53) Katinka Hosszú (59.34) Evelyn Verrasztó (53.69) | 4:03.63 | NR |
| 15 | 1 | 4 | Czech Republic | Simona Baumrtova (1:01.56) Petra Chocova (1:08.30) Lenka Jarosova (1:01.42) Petra Klosova (55.15) | 4:06.43 | NR |
| 16 | 1 | 7 | Ukraine | Daryna Zevina (1:02.34) Anna Khlistunova (1:10.35) Kateryna Zubkova (59.70) Dar'ya Stepanyuk (54.98) | 4:07.37 | |
| 17 | 2 | 2 | Poland | Alicja Tchorz (1:01.53) Ewa Scieszko (1:09.67) Mirela Olczak (1:01.17) Katarzyna Wilk (55.44) | 4:07.81 | |
| 18 | 1 | 2 | Norway | Katharina Stiberg (1:04.37) Sara Nordenstam (1:10.54) Ingvild Snildal (57.02) Henriette Brekke (56.31) | 4:08.24 | NR |
| 19 | 2 | 9 | Belgium | Elodie Vanhamme (1:03.90) Elise Matthysen (1:09.14) Kimberly Buys (59.85) Jolien Sysmans (56.29) | 4:09.18 | |
| 20 | 2 | 1 | Israel | Anna Volchkov (1:02.75) Yuliya Banach (1:09.72) Amit Ivry (58.33) Kristina Tchernychev (58.69) | 4:09.49 | NR |
| 21 | 4 | 1 | Belarus | Aleksandra Kovaleva (1:03.47) Inna Kapishina (1:08.11) Iryna Niafedava (1:01.51) Yulia Khitraya (56.63) | 4:09.72 | |
| 22 | 4 | 8 | Lithuania | Rugile Mileisyte (1:02.72) NR Raminta Dvariskyte (1:09.97) Aiste Dobrovolskaite (1:02.05) Grite Apanaviciute (57.56) | 4:12.30 | NR |
| 23 | 3 | 7 | Singapore | Lim Shana Jia Yi (1:03.25) Roanne Ho (1:11.90) Lynette Lim (1:01.97) Quah Ting Wen (55.23) | 4:12.35 | NR |
| 24 | 3 | 1 | Ireland | Aisling Cooney (1:03.18) Fiona Doyle (1:10.53) Gráinne Murphy (1:02.41) Clare Dawson (56.55) | 4:12.67 | NR |
| 25 | 2 | 8 | Bahamas | Alana Dillette (1:03.40) Alicia Lightbourne (1:12.28) Arianna Vanderpool-Wallace (1:00.45) Teisha Lightbourne (59.46) | 4:15.59 | NR |
| 26 | 3 | 8 | Chinese Taipei | Chen Ting (1:04.63) Chen I-Chuan (1:14.08) Ting Sheng-Yo (1:03.59) Yang Chin-Kuei (56.58) | 4:18.88 | |
| 27 | 1 | 1 | Zimbabwe | Kirsten Lapham (1:07.06) Maxine Heard (1:13.30) Moira Fraser (1:06.25) Nicole Horn (57.74) | 4:24.35 | |
| 28 | 4 | 0 | Macau | Fong Man Wai (1:08.98) Lei On Kei (1:14.66) Ma Cheok Mei (1:06.50) Tan Chi Yan (1:01.53) | 4:31.67 | |
| 29 | 1 | 5 | Kenya | Rachita Shah (1:10.24) Achieng Ajulu-Bushell (1:11.94) Pina Ercolano (1:10.79) Sylvia Brunlehner (1:01.69) | 4:34.66 | NR |
| 30 | 1 | 3 | Malta | Nicol Cremona (1:08.65) Melinda Sue Micallef (1:19.84) Davina Mangion (1:06.08) Talisa Pace (1:00.35) | 4:34.92 | |
| 31 | 2 | 0 | Senegal | Khadidiatou Dieng (1:15.57) Ouleye Diallo (1:23.00) Binta Zahra Diop (1:02.31) Mareme Faye (1:05.32) | 4:46.20 | NR |
| 32 | 1 | 6 | Mozambique | Jessika Cossa (1:13.90) Monica Bernardo (1:19.47) Gessica Stagno (1:10.83) Faina Salate (1:04.42) | 4:48.62 | |
| 33 | 3 | 0 | India | Fariha Zaman (1:11.89) Murugaperumal Venpa (1:28.78) Pooja Raghava Alva (1:08.24) Chittaranjan Shubha (1:04.11) | 4:53.02 | |
| 34 | 4 | 9 | Albania | Reni Jani (1:21.63) Tea Pikuli (1:27.11) Sara Abdullahu (1:11.50) Rovena Marku (1:05.71) | 5:05.95 | |
| 35 | 3 | 9 | Pakistan | Rida Mitha (1:21.63) Aqsa Tariq (1:34.54) Sakina Ghulam (1:23.81) Mahnoor Maqsood (1:13.05) | 5:33.03 | |
| – | 2 | 7 | Venezuela | | DNS | |
| – | 4 | 2 | Italy | Elena Gemo (1:01.00) Chiara Boggiatto (1:07.08) Ilaria Bianchi (58.77) Laura Letrari | DSQ | |

### Final

| Rank | Lane | Nation | Swimmers | Time | Note |
| | 4 | China | Zhao Jing (58.98) AS Chen Huijia (1:04.12) Jiao Liuyang (56.28) Li Zhesi (52.81) | 3:52.19 | WR |
| | 1 | Australia | Emily Seebohm (59.40) Sarah Katsoulis (1:04.65) Jessicah Schipper (56.19) Lisbeth Trickett (52.34) | 3:52.58 | OC |
| | 3 | Germany | Daniela Samulski (59.85) Sarah Poewe (1:06.81) Annika Mehlhorn (57.14) Britta Steffen (51.99) | 3:55.79 | ER |
| 4 | 2 | Great Britain | Gemma Spofforth (58.96) Lowri Tynan (1:07.80) Ellen Gandy (57.39) Fran Halsall (52.88) | 3:57.03 | NR |
| 5 | 6 | Netherlands | Femke Heemskerk (1:01.28) =NR Lia Dekker (1:06.51) Inge Dekker (56.82) Ranomi Kromowidjojo (52.70) | 3:57.31 | NR |
| 6 | 7 | Canada | Julia Wilkinson (1:00.37) NR Annamay Pierse (1:06.48) Audrey Lacroix(57.51) Victoria Poon (53.51) | 3:57.87 | NR |
| 7 | 5 | Japan | Shiho Sakai (59.30) Nanaka Tamura (1:07.24) Yuka Kato (57.32) Haruka Ueda (54.07) | 3:57.93 | |
| 8 | 8 | Brazil | Fabíola Molina (1:00.07) SA Carolina Mussi (1:08.22) Gabriella Silva (56.65) Tatiana Lemos (53.89) | 3:58.83 | |