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

The men's 100 metre individual medley event at the 11th FINA World Swimming Championships (25m) took place 15 – 16 December 2012 at the Sinan Erdem Dome. The final was won by American Ryan Lochte in a time of 51.21. In the semifinals, Lochte broke Peter Mankoč's world record of 50.76 set in 2009 with a time of 50.71.

## Records

Prior to this competition, the existing world and championship records were as follows:
| | Name | Nation | Time | Location | Date |
| World record | Peter Mankoč | Slovenia | 50.76 | Istanbul | 12 December 2009 |
| Championship record | Ryan Lochte | United States | 50.81 | Dubai | 18 December 2010 |
The following records were established during the competition:
| Date | Event | Name | Nation | Time | Record |
| 15 December | Semifinals | Ryan Lochte | United States | 50.71 | WR |

## Results
### Heats

| Rank | Heat | Lane | Name | Time | Notes |
| 1 | 2 | 5 | Ryan Lochte (USA) | 51.75 | Q |
| 2 | 8 | 4 | Kenneth To (AUS) | 52.58 | Q |
| 3 | 7 | 3 | Simon Sjödin (SWE) | 53.08 | Q, NR |
| 4 | 9 | 7 | Daiya Seto (JPN) | 53.49 | Q |
| 5 | 9 | 4 | George Bovell (TRI) | 53.51 | Q |
| 6 | 8 | 3 | Takuro Fujii (JPN) | 53.57 | Q |
| 7 | 7 | 2 | Gal Nevo (ISR) | 53.61 | Q |
| 8 | 7 | 6 | Diogo Carvalho (POR) | 53.64 | Q |
| 9 | 3 | 1 | Conor Dwyer (USA) | 53.68 | Q |
| 10 | 8 | 5 | Martti Aljand (EST) | 53.82 | Q |
| 11 | 9 | 5 | Peter Mankoč (SLO) | 53.92 | Q |
| 12 | 8 | 8 | Jake Tapp (CAN) | 54.06 | Q |
| 13 | 8 | 6 | Daniel Skaaning (DEN) | 54.13 | Q |
| 14 | 6 | 5 | Robert Žbogar (SLO) | 54.21 | Q |
| 15 | 8 | 1 | Jan Świtkowski (POL) | 54.32 | Q |
| 16 | 2 | 0 | Mindaugas Sadauskas (LTU) | 54.43 | Q |
| 17 | 9 | 3 | Dmitry Zhilin (RUS) | 54.44 | |
| 18 | 9 | 8 | Aleksey Derlyugov (UZB) | 54.50 | NR |
| 19 | 9 | 1 | Chris Christensen (DEN) | 54.55 | |
| 20 | 7 | 7 | Sun Xiaolei (CHN) | 54.59 | |
| 21 | 8 | 2 | Darren Murray (RSA) | 54.64 | |
| 22 | 8 | 0 | Andreas Vazaios (GRE) | 54.72 | |
| 23 | 9 | 2 | Dominik Straga (CRO) | 54.92 | |
| 24 | 6 | 6 | Dávid Verrasztó (HUN) | 55.07 | |
| 25 | 7 | 8 | Taki Mrabet (TUN) | 55.26 | |
| 26 | 7 | 5 | Coleman Allen (CAN) | 55.40 | |
| 27 | 3 | 8 | Ensar Hajder (BIH) | 55.53 | NR |
| 28 | 7 | 1 | Jason Dunford (KEN) | 55.55 | NR |
| 29 | 2 | 4 | Liu Weijia (CHN) | 55.57 | |
| 30 | 9 | 0 | Orel Oral (TUR) | 55.93 | |
| 31 | 6 | 4 | Alex Hernandez Medina (CUB) | 56.04 | |
| 32 | 7 | 0 | Vasilii Danilov (KGZ) | 56.47 | |
| 33 | 3 | 0 | Matthew Johnson (GBR) | 57.15 | |
| 34 | 8 | 9 | Quah Zheng Wen (SIN) | 57.23 | |
| 35 | 6 | 2 | Agnishwar Jayaprakash (IND) | 57.28 | |
| 36 | 6 | 3 | Jordy Groters (ARU) | 57.63 | |
| 37 | 5 | 2 | Eliebenezer San Jose Wong (NMI) | 57.89 | |
| 38 | 7 | 9 | Pang Sheng Jun (SIN) | 57.91 | |
| 39 | 2 | 3 | Awse Ma'aya (JOR) | 58.35 | |
| 40 | 3 | 2 | Marko Blaževski (MKD) | 58.59 | |
| 41 | 2 | 7 | Damjan Petrovski (MKD) | 59.00 | |
| 42 | 6 | 8 | Arvind Mani (IND) | 59.82 | |
| 43 | 5 | 4 | Enrique Duran Garcia-Bedoya (PER) | 59.84 | |
| 44 | 2 | 2 | Obaid Al-Jasmi (UAE) | 59.88 | |
| 45 | 5 | 3 | Colin Bensadon (GIB) | 59.95 | |
| 46 | 6 | 7 | Josue Dominguez Ramos (DOM) | 1:00.06 | |
| 47 | 3 | 6 | Jordan Augier (LCA) | 1:00.22 | NR |
| 48 | 3 | 9 | Lao Kuan Fong (MAC) | 1:00.53 | |
| 49 | 3 | 7 | Chao Man Hou (MAC) | 1:00.65 | |
| 50 | 6 | 9 | Paul Elaisa (FIJ) | 1:01.05 | |
| 51 | 5 | 7 | Fernando Medrano Medina (NCA) | 1:01.53 | |
| 52 | 6 | 0 | Omar Yousif (BHR) | 1:01.60 | |
| 53 | 6 | 1 | Julian Harding (MLT) | 1:01.68 | |
| 54 | 4 | 4 | Julien Brice (LCA) | 1:02.37 | |
| 55 | 5 | 0 | Ralph Goveia (ZAM) | 1:02.46 | |
| 56 | 5 | 1 | Kensuke Kimura (NMI) | 1:02.56 | |
| 57 | 1 | 3 | David van der Colff (BOT) | 1:03.49 | |
| 58 | 5 | 8 | C. Andrews (COK) | 1:03.57 | |
| 59 | 5 | 9 | Omar Omar (QAT) | 1:04.64 | |
| 60 | 4 | 5 | Azim Azimov (TKM) | 1:05.28 | |
| 61 | 4 | 6 | Khalid Baba (BHR) | 1:06.82 | |
| 62 | 2 | 6 | Kgosietsile Molefinyane (BOT) | 1:07.16 | |
| 63 | 4 | 3 | Valentin Gorshkov (TKM) | 1:07.44 | |
| 64 | 4 | 2 | Michael Hitchcock (GIB) | 1:09.11 | |
| 65 | 4 | 8 | Franc Aleksi (ALB) | 1:09.66 | |
| 66 | 5 | 5 | Giordan Harris (MHL) | 1:09.69 | |
| 67 | 4 | 0 | Brandon Schuster (SAM) | 1:10.04 | |
| 68 | 1 | 5 | Mamadou Amara Soumare (MLI) | 1:11.51 | |
| 69 | 3 | 4 | Jamal Tamasese (SAM) | 1:12.72 | |
| 70 | 4 | 1 | Conrad Gaira (UGA) | 1:13.39 | |
| 71 | 4 | 9 | Naser Hassan (QAT) | 1:14.99 | |
| 72 | 3 | 5 | Nikolas Sylvester (VIN) | 1:15.21 | |
| 73 | 3 | 3 | Storm Halbich (VIN) | 1:17.56 | |
| | 2 | 1 | Rhudi Ayi Mensah Quaye (GHA) | DSQ | |
| | 4 | 7 | Tepaia Zac Payne (COK) | DSQ | |
| | 1 | 4 | Alexis Santos (POR) | DNS | |
| | 2 | 8 | Luis Rafael Rojas Martinez (VEN) | DNS | |
| | 5 | 6 | Omar Mithqal (JOR) | DNS | |
| | 7 | 4 | Vladimir Morozov (RUS) | DNS | |
| | 8 | 7 | Aschwin Wildeboer (ESP) | DNS | |
| | 9 | 6 | Thiago Simon (BRA) | DNS | |
| | 9 | 9 | Gabriel Melconian Alvez (URU) | DNS | |

### Semifinals

| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Ryan Lochte | United States | 50.71 | WR |
| 2 | 1 | 4 | Kenneth To | Australia | 51.47 | |
| 3 | 2 | 3 | George Bovell | Trinidad and Tobago | 51.66 | |
| 4 | 2 | 5 | Simon Sjödin | Sweden | 52.51 | NR |
| 5 | 2 | 2 | Conor Dwyer | United States | 52.74 | |
| 6 | 2 | 7 | Peter Mankoč | Slovenia | 52.80 | |
| 7 | 1 | 5 | Daiya Seto | Japan | 53.10 | |
| 8 | 1 | 3 | Takuro Fujii | Japan | 53.14 | |
| 9 | 2 | 6 | Gal Nevo | Israel | 53.25 | |
| 10 | 1 | 2 | Martti Aljand | Estonia | 53.31 | |
| 11 | 1 | 7 | Jake Tapp | Canada | 53.67 | |
| 12 | 1 | 6 | Diogo Carvalho | Portugal | 53.69 | |
| 13 | 2 | 1 | Daniel Skaaning | Denmark | 54.05 | |
| 14 | 2 | 8 | Jan Świtkowski | Poland | 54.21 | |
| 15 | 1 | 1 | Robert Žbogar | Slovenia | 54.28 | |
| 16 | 1 | 8 | Mindaugas Sadauskas | Lithuania | 54.85 | |

### Final

The final was held at 19:37.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Ryan Lochte | United States | 51.21 | |
| | 5 | Kenneth To | Australia | 51.38 | OC |
| | 3 | George Bovell | Trinidad and Tobago | 51.66 | |
| 4 | 7 | Peter Mankoč | Slovenia | 52.51 | |
| 5 | 6 | Simon Sjödin | Sweden | 52.63 | |
| 6 | 2 | Conor Dwyer | United States | 52.83 | |
| 7 | 8 | Takuro Fujii | Japan | 53.11 | |
| 8 | 1 | Daiya Seto | Japan | 53.15 | |