# 2012 World Junior Championships in Athletics – Men's 4 × 100 metres relay

The men's 4 × 100 metres relay at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 13 and 14 July.

## Medalists

| Gold | Silver | Bronze |
| United States Tyreek Hill Aldrich Bailey Arthur Delaney Aaron Ernest | Jamaica Tyquendo Tracey Odean Skeen Jevaughn Minzie Jazeel Murphy | Japan Kazuma Oseto Akiyuki Hashimoto Aska Cambridge Kazuki Kanamori |

## Records

Prior to the competition, the existing world junior and championship records were as follows.
| World Junior Record & Championship Record | United States (Trell Kimmons, Abidemi Omole, Ivory Williams, LaShawn Merritt) | 38.66 | Grosseto, Italy | 18 July 2004 |
| World Junior Leading | Japan (Kazuma Oseto, Akiyuki Hashimoto, Tatsuro Suwa, Kazuki Kanamori) | 39.16 | Fukuroi, Japan | 3 May 2012 |
| Broken records during the 2012 World Junior Championships in Athletics |||||
| World Junior Leading | United States (Tyreek Hill, Aldrich Bailey, Arthur Delaney, Aaron Ernest) | 38.67 | Barcelona, Spain | 14 July 2012 |

## Results
### Heats

Qualification: First 2 of each heat (Q) plus the 2 fastest times (q) qualified
| Rank | Heat | Lane | Nation | Athletes | Time | Notes |
| 1 | 1 | 8 | Japan | Kazuma Oseto, Akiyuki Hashimoto, Aska Cambridge, Kazuki Kanamori | 39.01 | Q, WJL |
| 2 | 3 | 4 | Great Britain | Emmanuel Stephens, Chijindu Ujah, Thomas Holligan, Adam Gemili | 39.09 | Q, SB |
| 3 | 3 | 5 | Jamaica | Jevaughn Minzie, Odean Skeen, Senoj-Jay Givans, Jazeel Murphy | 39.19 | Q, SB |
| 4 | 2 | 6 | United States | Cameron Burrell, Aldrich Bailey, Arman Hall, Arthur Delaney | 39.25 | Q, SB |
| 5 | 1 | 4 | Brazil | Leandro de Araújo, Yuri Monteiro, Renato dos Santos Junior, Rodrigo Rocha | 39.29 | Q, AJ |
| 6 | 1 | 7 | Poland | Kamil Bijowski, Przemysław Słowikowski, Karol Zalewski, Adam Jabłoński | 39.31 | q, NJ |
| 7 | 1 | 9 | Australia | Ben Jaworski, Hugh Donovan, Nicholas Hough, Matthew Bertacco | 39.34 | q, AJ |
| 8 | 2 | 7 | Bahamas | Anthony Farrington, Blake Bartlett, Shane Jones, Stephen Newbold | 39.48 | Q, NJ |
| 9 | 1 | 6 | Thailand | Ruttanapon Sowan, Kritsada Namsuwan, Jaran Sathoengram, Jirapong Meenapra | 39.68 | SB |
| 10 | 1 | 5 | Nigeria | Chukwudike Harry, Okeudo Jonathan Nmaju, Mamus Emuobonuvie, Martins Ogierakhia | 39.86 | SB |
| 11 | 1 | 3 | South Africa | Angus Julies, Siphelo Ngquboza, Pieter Conradie, Fana Mofokeng | 39.87 | SB |
| 12 | 2 | 9 | Trinidad and Tobago | Jesse Berkley, Jonathan Holder, Ashron Sobers, Jonathan Farinha | 40.01 | |
| 13 | 2 | 3 | Germany | Robert Polkowski, Patrick Domogala, Maximilian Ruth, Jonas Lohmann | 40.08 | SB |
| 14 | 2 | 8 | Italy | Alessandro Pino, Fausto Desalu, Giacomo Tortu, Giovanni Galbieri | 40.41 | SB |
| 15 | 3 | 4 | Canada | Devon Rittinger, Drelan Bramwell, Mobolade Ajomale, Calvin Arsenault | 40.58 | SB |
| 16 | 2 | 5 | Denmark | Morten Dalgaard Madsen, Andreas Trajkovski, Emil Strom, Frederik Thomsen | 40.60 | NJ |
| 17 | 3 | 6 | Spain | Adrián Pérez, Daniel Mazón, Óscar Husillos, Rodrigo De la Oliva | 41.08 | SB |
| 18 | 3 | 7 | Bahrain | Husain Mohamed Hasan, Ahmed Mohamed Alshawoosh, Husain Sameer Mubarak, Ali Omar Abdulla Al Doseri | 41.09 | |
| | 3 | 8 | France | Guy-Elphège Anouman, Pierre Chalus, Mickael-Meba Zeze, Ken Romain | DQ | |
| | 3 | 3 | Switzerland | Brahian Peña, Yanier Bello, Silvan Wicki, Bastien Mouthon | DQ | |
| | 2 | 4 | Finland | Miika Wynne-Ellis, Markus Koivula, Samuli Lehtinen, Eetu Rantala | DQ | |
| | 3 | 2 | Czech Republic | Marek Bakalár, Michal Desensky, Jan Jirka, Zdenek Stromšík | DQ | |

### Final

| Rank | Lane | Nation | Athletes | Time | Notes |
| | 6 | United States | Tyreek Hill, Aldrich Bailey, Arthur Delaney, Aaron Ernest | 38.67 | WJL |
| | 5 | Jamaica | Tyquendo Tracey, Odean Skeen, Jevaughn Minzie, Jazeel Murphy | 38.97 | NJ |
| | 4 | Japan | Kazuma Oseto, Akiyuki Hashimoto, Aska Cambridge, Kazuki Kanamori | 39.02 | |
| 4 | 2 | Poland | Kamil Bijowski, Przemysław Słowikowski, Karol Zalewski, Adam Jabłoński | 39.47 | |
| 5 | 3 | Australia | Ben Jaworski, Hugh Donovan, Nicholas Hough, Matthew Bertacco | 39.59 | |
| 6 | 8 | Bahamas | Blake Bartlett, Teray Smith, Shane Jones, Stephen Newbold | 39.74 | |
| 7 | 9 | Brazil | Leandro de Araújo, Yuri Monteiro, Renato dos Santos Junior, Rodrigo Rocha | 39.75 | |
| | 7 | Great Britain | Emmanuel Stephens, Chijindu Ujah, David Bolarinwa, Adam Gemili | DNF | |

## Participation

According to an unofficial count, 93 athletes from 22 countries participated in the event.
* Australia (4)
* Bahamas (5)
* Bahrain (4)
* Brazil (4)
* Canada (4)
* Czech Republic (4)
* Denmark (4)
* Finland (4)
* France (4)
* Germany (4)
* Italy (4)
* Jamaica (5)
* Japan (4)
* Nigeria (4)
* Poland (4)
* South Africa (4)
* Spain (4)
* Switzerland (4)
* Thailand (4)
* Trinidad and Tobago (4)
* United Kingdom (5)
* United States (6)