# Athletics at the 2012 Summer Paralympics – Men's 400 metres T46

| 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/F42–46 |||||||
| Track |||||||
| 100 m | T42 | | T44 | | T46 |
| 200 m | T42 | | T44 | | T46 |
| 400 m | | | T44 | | T46 |
| 800 m | | | | | T46 |
| 1500 m | | | | | T46 |
| 4×100 m relay | | T42-46 | T42-46 | T42-46 |
| Road |||||||
| Marathon | | | | | T46 |
| Field |||||||
| Long jump | | F42-44 | F42-44 | | F46 |
| Triple jump | | | | | F46 |
| High jump | F42 | | | | F46 |
| Shot put | | F42-44 | F42-44 | F42-44 | F46 |
| Discus throw | F42 | | F44 |
| Javelin throw | F42 | | F44 |
| Women T/F42–46 |||||||
| Track |||||||
| 100 m | T42 | | T44 | | T46 |
| 200 m | | | T44 | | T46 |
| 400 m | | | | | T46 |
| Field |||||||
| Long jump | | F42-44 | F42-44 | | F46 |
| Shot put | | F42-44 | F42-44 | F42-44 |
| Javelin throw | | | | | F46 |
The Men's 400 metres T46 event at the 2012 Summer Paralympics took place at the London Olympic Stadium on 4 September.
The T46 category is for athletes who have a single above or below elbow amputation or similar disability, with normal function in both legs.

## Records

Prior to the competition, the existing World and Paralympic records were as follows:
| World record (T45) | Yohansson Ferreira (BRA) | 49.59 | 19 August 2007 | Rio de Janeiro, Brazil |
| Paralympic record (T45) | ? | | | |
| World & Paralympic record (T46) | Heath Francis (AUS) | 47.69 | 10 September 2008 | Beijing, China |
| Broken records during the 2012 Summer Paralympics |||||
| Paralympic record (T45) | Yohansson Nascimento (BRA) | 50.18 | 4 September 2012 | |
| World record (T45) | Yohansson Nascimento (BRA) | 49.21 | 4 September 2012 | |

## Results
### Round 1

Competed 4 September 2012 from 10:38. Qual. rule: first 3 in each heat (Q) plus the 2 fastest other times (q) qualified.

#### Heat 1

| Rank | Athlete | Country | Class | Time | Notes |
| 1 | Gunther Matzinger | Austria | T46 | 49.91 | Q |
| 2 | Yohansson Nascimento | Brazil | T45 | 50.18 | Q, PR |
| 3 | Antonis Aresti | Cyprus | T46 | 50.30 | Q, SB |
| 4 | Xie Hexing | China | T46 | 50.74 | q, SB |
| 5 | Samuel Colmenares | Venezuela | T46 | 51.31 | SB |
| 6 | Alexey Kotlov | Russia | T46 | 51.52 | |
| 7 | Cesar Lopes Cardoso | Guinea-Bissau | T46 | 55.08 | SB |

#### Heat 2

| Rank | Athlete | Country | Class | Time | Notes |
| 1 | Hermas Muvunyi | Rwanda | T46 | 49.75 | Q, RR |
| 2 | Pradeep Uggl Dena Pathirannehelag | Sri Lanka | T46 | 49.82 | Q, PB |
| 3 | Addoh Kimou | Ivory Coast | T46 | 50.17 | Q, PB |
| 4 | Emicarlo Souza | Brazil | T46 | 50.40 | q |
| 5 | Tshepo Bhebe | South Africa | T46 | 52.24 | |
| 6 | Yao Jianjun | China | T46 | 54.37 | SB |

### Final

Competed 4 September 2012 at 20:54.
| Rank | Athlete | Country | Class | Time | Notes |
| 1 | Gunther Matzinger | Austria | T46 | 48.45 | RR |
| 2 | Yohansson Nascimento | Brazil | T45 | 49.21 | WR |
| 3 | Pradeep Uggl Dena Pathirannehelag | Sri Lanka | T46 | 49.28 | RR |
| 4 | Antonis Aresti | Cyprus | T46 | 49.59 | SB |
| 5 | Hermas Muvunyi | Rwanda | T46 | 49.59 | RR |
| 6 | Emicarlo Souza | Brazil | T46 | 50.74 | |
| 7 | Xie Hexing | China | T46 | 1:01.80 | |
| 8 | Addoh Kimou | Ivory Coast | T46 | DQ | |
Q = qualified by place. q = qualified by time. WR = World Record. PR = Paralympic Record. RR = Regional Record. PB = Personal Best.