# Athletics at the 2012 Summer Paralympics – Men's 400 metres T12

| Athletics at the 2012 Summer Paralympics | Athletics at the 2012 Summer Paralympics | Athletics at the 2012 Summer Paralympics | Athletics at the 2012 Summer Paralympics | Athletics at the 2012 Summer Paralympics | |
| Classification |||||||
| T/F11–13: Blind and visually impaired |||||||
| T/F20: Intellectual disability |||||||
| T/F31–38: Cerebral palsy |||||||
| F40: Les Autres |||||||
| T/F42–46: Amputees |||||||
| T/F51–58: Spinal cord disability |||||||
| Men T/F11–13 |||||||
| Track |||||||
| 100 m | T11 | | T12 | | T13 |
| 200 m | T11 | | T12 | | T13 |
| 400 m | T11 | | T12 | | T13 |
| 800 m | | | T12 | | T13 |
| 1500 m | T11 | | | | T13 |
| 5000 m | T11 | | T12 | | |
| 4×100 m relay | T11–13 | T11–13 | T11–13 | T11–13 | T11–13 |
| Road |||||||
| Marathon | | | T12 | | |
| Field |||||||
| Long jump | F11 | | | | F13 |
| Triple jump | F11 | | F12 | | |
| Shot put | F11–12 | F11–12 | F11–12 | | |
| Discus throw | F11 | | | | |
| Javelin throw | | | F12–13 | F12–13 | F12–13 |
| Women T/F11–13 |||||||
| Track |||||||
| 100 m | T11 | | T12 | | T13 |
| 200 m | T11 | | T12 | | |
| 400 m | | | T12 | | T13 |
| 1500 m | | | T12 | | |
| Field |||||||
| Long jump | F11–12 | F11–12 | F11–12 | | F13 |
| Shot put | F11–12 | F11–12 | F11–12 | | |
| Discus throw | F11–12 | F11–12 | F11–12 | | |
| Javelin throw | | | F12–13 | F12–13 | F12–13 |
The Men's 400 metres T12 event at the 2012 Summer Paralympics took place at the London Olympic Stadium from 2 to 6 September.
The T12 category is for athletes with visual impairment. Athletes in this category will generally have some residual sight, the ability to recognise the shape of a hand at a distance of 2 metres and the ability to perceive clearly will be no more than 2/60. T12 athletes commonly run with guides.

## Records

Prior to the competition, the existing World and Paralympic records were as follows:
| World record | Gabriel Potra (POR) | 48.62 | 25 July 2002 | Villeneuve d'Ascq, France |
| Paralympic record | Adekundo Adesoji (NGR) | 48.93 | 25 September 2004 | Athens, Greece |
| Broken records during the 2012 Summer Paralympics |||||
| World record | Mahmoud Khaldi (TUN) | 48.52 | 6 September 2012 | |

## Results
### Round 1

Competed 2 September 2012 from 19:00. Qual. rule: winner of each heat (Q) plus the 4 fastest other times (q) qualified.

#### Heat 1

| Rank | Athlete | Country | Time | Notes |
| 1 | Hilton Langenhoven | South Africa | 49.86 | Q |
| 2 | Thierb Siqueira Guide: Roger Pereira Manarin | Brazil | 50.80 | q, SB |
| 3 | Rodolfo Alves | Portugal | 54.00 | |

#### Heat 2

| Rank | Athlete | Country | Time | Notes |
| 1 | Jorge B. Gonzalez Sauceda | Mexico | 50.83 | Q, PB |
| 2 | Rza Osmanov | Azerbaijan | 51.46 | q, SB |
| 3 | Martin Amutenya Aloisius | Namibia | 57.73 | SB |
| 4 | Semih Deniz | Turkey | DQ | |

#### Heat 3

| Rank | Athlete | Country | Time | Notes |
| 1 | Mahmoud Khaldi | Tunisia | 50.58 | Q, SB |
| 2 | Hyacinthe Deleplace | France | 51.09 | q, PB |
| 3 | Matthias Schroeder Guide: Tobias Schneider | Germany | 52.04 | |
| 4 | Henry Nzungi Mwendo | Kenya | 52.67 | SB |

#### Heat 4

| Rank | Athlete | Country | Time | Notes |
| 1 | Sun Qichao | China | 50.91 | Q |
| 2 | Gerard Desgarrega Puigdevall Guide: Alejandro Guerrero Diaz | Spain | 50.91 | q, PB |
| 3 | Mehmet Nesim Oner | Turkey | 52.53 | PB |
| 4 | Suphachai Songphinit | Thailand | 53.03 | SB |

### Semifinals

Competed 4 September 2012 from 11:40. Qual. rule: winner of each heat (Q) plus the two fastest other times (q) qualified.

#### Heat 1

| Rank | Athlete | Country | Time | Notes |
| 1 | Hilton Langenhoven | South Africa | 49.42 | Q, =PB |
| 2 | Sun Qichao | China | 50.96 | |
| 3 | Rza Osmanov | Azerbaijan | 51.34 | SB |
| | Thierb Siqueira Guide: Roger Pereira Manarin | Brazil | DQ | |

#### Heat 2

| Rank | Athlete | Country | Time | Notes |
| 1 | Mahmoud Khaldi | Tunisia | 49.02 | Q, PB |
| 2 | Jorge B. Gonzalez Sauceda | Mexico | 50.43 | q, PB |
| 3 | Gerard Desgarrega Puigdevall Guide: Alejandro Guerrero Diaz | Spain | 50.43 | q, PB |
| 4 | Hyacinthe Deleplace | France | 51.40 | |

### Final

Competed 6 September 2012 at 19:00.
| Rank | Athlete | Country | Time | Notes |
| | Mahmoud Khaldi | Tunisia | 48.52 | WR |
| | Hilton Langenhoven | South Africa | 49.04 | PB |
| | Jorge Benjamin Gonzalez Sauceda | Mexico | 50.41 | PB |
| 4 | Gerard Desgarrega Puigdevall Guide: Alejandro Guerrero Diaz | Spain | 50.68 | |
Q = qualified by place. q = qualified by time. WR = World Record. PB = Personal Best.