# Athletics at the 2018 Asian Games – Men's 400 metres

The men's 400 metres competition at the 2018 Asian Games took place on 25 and 26 August 2018 at the Gelora Bung Karno Stadium.

## Schedule

All times are Western Indonesia Time (UTC+07:00)
| Date | Time | Event |
| Saturday, 25 August 2018 | 11:10 | Round 1 |
| Saturday, 25 August 2018 | 20:45 | Semifinals |
| Sunday, 26 August 2018 | 19:10 | Final |

## Records

Prior to this competition, the existing world, Asian and Games records were as follows.
| World Record | Wayde van Niekerk (RSA) | 43.03 | Rio de Janeiro, Brazil | 14 August 2016 |
| Asian Record | Yousef Masrahi (KSA) | 43.93 | Beijing, China | 23 August 2015 |
| Games Record | Yousef Masrahi (KSA) | 44.46 | Incheon, South Korea | 28 September 2014 |

## Results
### Legend

* DNF — Did not finish
* DNS — Did not start

### Round 1

* Qualification: First 4 in each heat (Q) and the next 4 fastest (q) advance to the semifinals.

#### Heat 1

| Rank | Athlete | Time | Notes |
| 1 | Muhammed Anas (IND) | 45.63 | Q |
| 2 | Mohamed Nasir Abbas (QAT) | 45.81 | Q |
| 3 | Kalinga Kumarage (SRI) | 45.99 | Q |
| 4 | Umar Wira (INA) | 48.00 | Q |
| 5 | Grigoriy Derepaskin (TJK) | 49.00 | q |
| — | Ali Khadivar (IRI) | DNF | |

#### Heat 2

| Rank | Athlete | Time | Notes |
| 1 | Mikhail Litvin (KAZ) | 46.43 | Q |
| 2 | Yang Lei (CHN) | 47.55 | Q |
| 3 | Muhammad Nadeem (PAK) | 49.19 | Q |
| 4 | Phitchaya Sunthonthuam (THA) | 49.71 | Q |
| 5 | Ifan Anugrah Setiawan (INA) | 50.34 | |
| 6 | Mohamed Abu Taleb (BAN) | 50.97 | |

#### Heat 3

| Rank | Athlete | Time | Notes |
| 1 | Abbas Abubakar Abbas (BRN) | 46.07 | Q |
| 2 | Julian Walsh (JPN) | 46.20 | Q |
| 3 | Zubin Muncherji (SGP) | 47.25 | Q |
| 4 | Yang Lung-hsiang (TPE) | 47.49 | Q |
| 5 | Erdenebatyn Turtogtokh (MGL) | 50.23 | |

#### Heat 4

| Rank | Athlete | Time | Notes |
| 1 | Abdalelah Haroun (QAT) | 46.28 | Q |
| 2 | Arokia Rajiv (IND) | 46.82 | Q |
| 3 | Mo Il-hwan (KOR) | 47.34 | Q |
| 4 | Trenten Beram (PHI) | 48.06 | Q |
| 5 | Davron Atabaev (TJK) | 48.37 | q |
| 6 | Yanakorn Munrot (THA) | 49.06 | q |

#### Heat 5

| Rank | Athlete | Time | Notes |
| 1 | Aruna Darshana (SRI) | 46.97 | Q |
| 2 | Ali Khamis (BRN) | 47.41 | Q |
| 3 | Andrey Sokolov (KAZ) | 48.26 | Q |
| 4 | Trần Đình Sơn (VIE) | 48.97 | Q |
| 5 | Nokar Hussain (PAK) | 49.75 | q |
| 6 | Asyeikhany Akhyt (MGL) | 51.22 | |

### Semifinals

* Qualification: First 2 in each heat (Q) and the next 2 fastest (q) advance to the final.

#### Heat 1

| Rank | Athlete | Time | Notes |
| 1 | Abbas Abubakar Abbas (BRN) | 45.59 | Q |
| 2 | Arokia Rajiv (IND) | 46.08 | Q |
| 3 | Aruna Darshana (SRI) | 46.53 | |
| 4 | Zubin Muncherji (SGP) | 47.88 | |
| 5 | Umar Wira (INA) | 48.57 | |
| 6 | Andrey Sokolov (KAZ) | 48.60 | |
| 7 | Grigoriy Derepaskin (TJK) | 48.84 | |
| 8 | Phitchaya Sunthonthuam (THA) | 48.97 | |

#### Heat 2

| Rank | Athlete | Time | Notes |
| 1 | Muhammed Anas (IND) | 45.30 | Q |
| 2 | Julian Walsh (JPN) | 46.01 | Q |
| 3 | Kalinga Kumarage (SRI) | 46.21 | q |
| 4 | Mohamed Nasir Abbas (QAT) | 46.33 | |
| 5 | Mo Il-hwan (KOR) | 46.73 | |
| 6 | Trần Đình Sơn (VIE) | 46.96 | |
| 7 | Trenten Beram (PHI) | 47.34 | |
| — | Nokar Hussain (PAK) | DNS | |

#### Heat 3

| Rank | Athlete | Time | Notes |
| 1 | Abdalelah Haroun (QAT) | 45.83 | Q |
| 2 | Ali Khamis (BRN) | 46.07 | Q |
| 3 | Mikhail Litvin (KAZ) | 46.12 | q |
| 4 | Yang Lung-hsiang (TPE) | 47.37 | |
| 5 | Davron Atabaev (TJK) | 48.89 | |
| 6 | Yanakorn Munrot (THA) | 48.96 | |
| 7 | Muhammad Nadeem (PAK) | 48.97 | |
| 8 | Yang Lei (CHN) | 49.25 | |

### Final

| Rank | Athlete | Time |
| | Abdalelah Haroun (QAT) | 44.89 |
| | Muhammed Anas (IND) | 45.69 |
| | Ali Khamis (BRN) | 45.70 |
| 4 | Arokia Rajiv (IND) | 45.84 |
| 5 | Julian Walsh (JPN) | 45.89 |
| 6 | Mikhail Litvin (KAZ) | 46.17 |
| 7 | Abbas Abubakar Abbas (BRN) | 46.41 |
| 8 | Kalinga Kumarage (SRI) | 46.49 |