# Swimming at the 2011 World Aquatics Championships – Men's 4 × 100 metre medley relay

The men's 4 × 100 metre medley relay competition of the swimming events at the 2011 World Aquatics Championships took place July 31. The heats and final took place July 31.

## Records

Prior to the competition, the existing world and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record Championship record | Aaron Peirsol (52.19) Eric Shanteau (58.57) Michael Phelps (49.72) David Walters (46.80) | United States | 3:27.28 | Rome | August 2, 2009 |

## Results
### Heats

17 teams participated in 3 heats.
| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 2 | 4 | United States | David Plummer (53.97) Eric Shanteau (1:00.13) Tyler McGill (51.00) Garrett Weber-Gale (47.32) | 3:32.42 | Q |
| 2 | 1 | 6 | Germany | Helge Meeuw (53.22) Hendrik Feldwehr (59.98) Benjamin Starke (51.79) Markus Deibler (48.70) | 3:33.69 | Q |
| 3 | 1 | 5 | Netherlands | Nick Driebergen (54.64) Lennart Stekelenburg (1:00.42) Joeri Verlinden (51.79) Sebastiaan Verschuren (47.74) | 3:34.59 | Q |
| 4 | 2 | 5 | Japan | Ryosuke Irie (53.59) Ryo Tateishi (1:00.52) Takeshi Matsuda (51.79) Takuro Fujii (48.92) | 3:34.82 | Q |
| 5 | 1 | 4 | Australia | Ben Treffers (54.09) Christian Sprenger (1:00.21) Sam Ashby (52.06) James Roberts (48.52) | 3:34.88 | Q |
| 6 | 2 | 6 | Canada | Charles Francis (54.19) Andrew Dickens (1:01.22) Joseph Bartoch (52.31) Brent Hayden (47.64) | 3:35.36 | Q |
| 7 | 3 | 2 | Poland | Radosław Kawęcki (55.20) Dawid Szulich (1:00.82) Paweł Korzeniowski (52.25) Konrad Czerniak (47.86) | 3:36.13 | Q, NR |
| 8 | 3 | 3 | Great Britain | Liam Tancock (54.41) Michael Jamieson (1:00.47) Antony James (52.95) Adam Brown (48.36) | 3:36.19 | Q |
| 9 | 3 | 4 | France | Jérémy Stravius (53.28) Hugues Duboscq (1:00.14) Florent Manaudou (54.02) Fabien Gilot (48.77) | 3:36.21 | |
| 10 | 2 | 3 | South Africa | Charl Crous (55.60) Cameron van der Burgh (1:00.34) Chad le Clos (52.28) Graeme Moore (48.25) | 3:36.47 | |
| 11 | 1 | 3 | Italy | Mirco Di Tora (54.64) Fabio Scozzoli (59.63) Marco Belotti (53.79) Luca Dotto (48.68) | 3:36.74 | |
| 12 | 3 | 5 | Russia | Stanislav Donets (54.25) Roman Sloudnov (1:00.61) Yevgeny Korotyshkin (52.47) Sergey Fesikov (49.49) | 3:36.82 | |
| 13 | 3 | 7 | China | Sun Xiaolei (54.71) Xie Zhi (1:00.59) Zhou Jiawei (52.52) Lü Zhiwu (49.10) | 3:36.92 | |
| 14 | 3 | 6 | Brazil | Guilherme Guido (55.12) Felipe França Silva (1:00.11) Kaio de Almeida (53.49) Bruno Fratus (48.27) | 3:36.99 | |
| 15 | 1 | 2 | Hungary | Péter Bernek (55.07) Dániel Gyurta (59.95) Bence Biczó (54.08) Dominik Kozma (49.14) | 3:38.24 | |
| 16 | 3 | 1 | Sweden | Simon Sjödin (55.70) Jakob Dorch (1:01.94) Lars Frölander (51.65) Petter Stymne (49.05) | 3:38.34 | |
| 17 | 1 | 7 | Lithuania | Matas Andriekus (56.19) Giedrius Titenis (1:00.32) Vytautas Janušaitis (53.27) Mindaugas Sadauskas (48.79) | 3:38.57 | |
| – | 2 | 2 | South Korea | | | DNS |
| – | 2 | 7 | Greece | | | DNS |

### Final

The final was held at 19:38.
| Rank | Lane | Nation | Swimmers | Time |
| | 4 | United States | Nick Thoman (53.61) Mark Gangloff (1:00.24) Michael Phelps (50.57) Nathan Adrian (47.64) | 3:32.06 |
| | 2 | Australia | Hayden Stoeckel (54.22) Brenton Rickard (59.32) Geoff Huegill (51.72) James Magnussen (47.00) | 3:32.26 |
| | 5 | Germany | Helge Meeuw (53.53) Hendrik Feldwehr (59.72) Benjamin Starke (51.83) Paul Biedermann (47.52) | 3:32.60 |
| 4 | 6 | Japan | Ryosuke Irie (52.94) Kosuke Kitajima (59.59) Takuro Fujii (51.55) Shogo Hihara (48.81) | 3:32.89 |
| 5 | 3 | Netherlands | Nick Driebergen (54.32) Lennart Stekelenburg (1:00.62) Joeri Verlinden (51.60) Sebastiaan Verschuren (47.57) | 3:34.11 |
| 6 | 8 | Great Britain | Liam Tancock (54.30) Michael Jamieson (1:00.98) Antony James (52.81) Adam Brown (48.49) | 3:36.58 |
| 7 | 7 | Canada | Charles Francis (54.36) Andrew Dickens (1:01.94) Joseph Bartoch (52.76) Brent Hayden (47.74) | 3:36.80 |
| 8 | 1 | Poland | Marcin Tarczyński (55.69) Dawid Szulich (1:01.04) Paweł Korzeniowski (52.44) Konrad Czerniak (48.27) | 3:37.44 |