# 2012 FINA World Swimming Championships (25 m) – Men's 4 × 100 metre medley relay

The men's 4×100 metre medley relay event at the 11th FINA World Swimming Championships (25m) took place 16 December 2012 at the Sinan Erdem Dome.

## Records

Prior to this competition, the existing world and championship records were as follows.
| | Nation | Swimmers | Time | Location | Date |
| World record | Russia | Stanislav Donets (49.63) Sergey Geybel (56.43) Yevgeny Korotyshkin (48.35) Danila Izotov (44.75) | 3:19.16 | Saint Petersburg | 20 December 2009 |
| Championship record | United States | Nick Thoman (49.88) Mihail Alexandrov (56.52) Ryan Lochte (49.17) Garrett Weber-Gale (45.42) | 3:20.99 | Dubai | 19 December 2010 |
No new records were set during this competition.

## Results
### Heats

| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 3 | 4 | United States | Ryan Murphy (50.91) Mihail Alexandrov (57.36) Tom Shields (50.91) Anthony Ervin (46.42) | 3:25.60 | Q |
| 2 | 3 | 5 | Russia | Stanislav Donets (49.96) Viatcheslav Sinkevich (57.98) Viacheslav Prudnikov (51.35) Yevgeny Lagunov (46.44) | 3:25.73 | Q |
| 3 | 1 | 4 | Australia | Robert Hurley (50.74) Kenneth To (57.63) Grant Irvine (51.58) Kyle Richardson (47.23) | 3:27.18 | Q |
| 4 | 2 | 4 | Brazil | Daniel Orzechowski (52.13) João Gomes Jr. (58.04) Kaio de Almeida (50.11) Guilherme Roth (47.21) | 3:27.49 | Q |
| 5 | 1 | 1 | Hungary | Péter Bernek (52.15) Dániel Gyurta (57.42) Bence Pulai (51.22) Dominik Kozma (47.47) | 3:28.26 | Q |
| 6 | 3 | 8 | Italy | Mirco Di Tora (51.78) Mattia Pesce (58.89) Matteo Rivolta (50.92) Marco Orsi (46.93) | 3:28.52 | Q, NR |
| 7 | 1 | 7 | China | Cheng Feiyi (51.76) Li Xiayan (58.49) Wu Peng (51.25) Lü Zhiwu (47.49) | 3:28.99 | Q |
| 8 | 2 | 5 | Japan | Yuki Shirai (52.18) Koichiro Okazaki (58.83) Takuro Fujii (51.25) Kenta Ito (46.74) | 3:29.00 | Q |
| 9 | 1 | 3 | South Africa | Darren Murray (52.62) Giulio Zorzi (59.36) Garth Tune (52.70) Leith Shankland (47.29) | 3:31.97 | AF |
| 10 | 1 | 5 | Israel | Jonatan Kopelev (52.19) Gal Nevo (58.76) Alon Mandel (52.80) Guy Barnea (48.68) | 3:32.43 | |
| 11 | 2 | 1 | Great Britain | Chris Walker-Hebborn (52.29) Craig Benson (58.10) Ieuan Lloyd (53.34) Robert Renwick (48.91) | 3:32.64 | |
| 12 | 3 | 7 | Belarus | Pavel Sankovich (52.69) Viktar Vabishchevich (1:00.14) Yauhen Tsurkin (51.41) Arseni Kukharau (48.66) | 3:32.90 | NR |
| 13 | 2 | 7 | Canada | Jake Tapp (53.30) Andrew Poznikoff (59.36) Coleman Allen (52.77) Thomas Gossland (48.10) | 3:33.53 | |
| 14 | 2 | 3 | Turkey | Iskender Baslakov (52.03) Mustafa Kacmaz (1:01.27) Nurettin Yildir Erhan (53.76) Kemal Arda Gürdal (47.00) | 3:34.06 | NR |
| 15 | 3 | 3 | Paraguay | Charles Hockin Brusquetti (54.15) Genaro Prono (1:02.45) Jose Emmanuel Lobo Martinez (54.11) Ben Hockin (47.71) | 3:38.42 | |
| 16 | 2 | 6 | Singapore | Quah Zheng Wen (54.84) Lionel Khoo (1:01.46) Joseph Schooling (53.02) Ng Kai Wee Rainer (51.24) | 3:40.56 | |
| 17 | 3 | 2 | Peru | Mauricio Fiol (55.98/NR) Enrique Duran Garcia-Bedoya (1:03.59) Emmanuel Crescimbeni (53.72) Jusuf Nikola Ustavdich Velez (51.25) | 3:44.54 | NR |
| 18 | 1 | 6 | India | Rohit Imoliya (59.58) Agnishwar Jayaprakash (1:02.50) Sarma Nair (57.19) Neil Himanshu Contractor (54.06) | 3:53.33 | |
| 19 | 3 | 6 | Macau | Ngou Pok Man (56.44) Chao Man Hou (1:02.95) Lao Kuan Fong (58.69) Sio Ka Kun (56.66) | 3:54.74 | |
| 20 | 1 | 2 | Bahrain | Faraj Farhan (1:05.27) Omar Yousif (1:07.97) Khalid Baba (1:02.67) Farhan Farhan (57.88) | 4:13.79 | |
| | 2 | 2 | Malta | Edward Caruana Dingli Andrea Agius Julian Harding Andrew Chetcuti | DNS | |
| | 2 | 8 | Venezuela | | DNS | |
| | 3 | 1 | Ghana | | DNS | |

### Final

The final was held at 21:16.
| Rank | Lane | Nation | Swimmers | Time | Notes |
| | 4 | United States | Matt Grevers (50.00) Kevin Cordes (57.15) Tom Shields (48.66) Ryan Lochte (45.22) | 3:21.03 | |
| | 5 | Russia | Stanislav Donets (50.10) Viatcheslav Sinkevich (57.54) Nikolay Skvortsov (50.27) Vladimir Morozov (44.95) | 3:22.86 | |
| | 3 | Australia | Robert Hurley (50.44) Kenneth To (57.44) Grant Irvine (50.75) Tommaso D'Orsogna (46.14) | 3:24.77 | |
| 4 | 6 | Brazil | Guilherme Guido (50.67) Felipe Lima (58.05) Kaio de Almeida (49.86) Guilherme Roth (47.15) | 3:25.73 | |
| 5 | 1 | China | Cheng Feiyi (51.50) Li Xiayan (58.34) Wu Peng (50.31) Lü Zhiwu (47.29) | 3:27.44 | NR |
| 6 | 8 | Japan | Kosuke Hagino (51.37) Akihiro Yamaguchi (57.53) Kazuya Kaneda (51.20) Kenji Kobase (47.38) | 3:27.48 | |
| | 2 | Hungary | Péter Bernek (52.27) Dániel Gyurta Bence Pulai Dominik Kozma | DSQ | |
| | 7 | Italy | Mirco Di Tora (52.36) Mattia Pesce (58.14) Matteo Rivolta (51.60) Marco Orsi | DSQ | |