The men's 400 metres at the 2019 Asian Athletics Championships was held on 21 and 22 April.

Records +Records before the 2019 Asian Athletics Championships Record Athlete (nation) Location Date World record 43.03 Rio de Janeiro, Brazil 14 August 2016 Asian record 43.93 Beijing, China 23 August 2015 Championship record 44.61 Fukuoka, Japan 20 July 1998 World leading 43.45 Torrance, United States 20 April 2019 Asian leading 44.60 Pretoria, South Africa 9 April 2019

Results Heats Qualification rule: First 3 in each heat (Q) and the next 4 fastest (q) qualified for the semifinals.

Rank Heat Name Nationality Time Notes 1 3 Julian Jrummi Walsh 46.00 Q 2 4 Arokia Rajiv 46.25 Q 3 1 Taha Hussein Yassen 46.27 Q, NR 4 1 Abbas Abubakar Abbas 46.27 Q 5 1 Muhammed Anas Yahiya 46.36 Q 6 1 Ashraf Hussein Osman 46.54 q, PB 7 4 Rikuya Ito 46.59 Q, SB 8 2 Mikhail Litvin 46.72 Q 9 2 Mehboob Ali 46.96 Q 10 3 Mo Il-hwan 47.01 Q 11 2 Mohamed Nasir Abbas 47.05 Q 12 2 Yasir Ali Al-Saadi 47.15 q 13 2 Phitchaya Sunthonthuam 47.31 q 13 3 Ajith Premakumara Millagaha Gedara 47.31 Q 15 2 Xu Haoran 47.40 q, SB 16 4 Yousef Karam 47.47 Q 17 3 Pan Haitao 47.69 SB 18 1 Andrey Sokolov 47.93 18 4 Joyme Sequita 47.93 20 4 Grigoriy Derepaskin 47.94 SB 21 3 Mazen Mawtan Al-Yasen 48.24 22 4 Ahmed Al-Yaari 48.27 NR 23 1 Mohammad Jahir Rayhan 48.51 23 2 Kirill Sarasov 48.51 25 3 Tan Zongyang 49.09 26 1 Saeed Bahashwan 49.72 27 4 Skhakhzatbek Sadykzhanuulu 49.95 PB 3 Hassan Mansour

Semi-finals Qualification rule: First 3 in each heat (Q) and the next 2 fastest (q) qualified for the final.

Rank Heat Name Nationality Time Notes 1 1 Yousef Karam 45.04 Q, PB 2 1 Abbas Abubakar Abbas 45.27 Q, SB 3 1 Mikhail Litvin 45.38 Q, NR 4 1 Julian Jrummi Walsh 45.67 q 5 2 Arokia Rajiv 45.96 Q 6 2 Taha Hussein Yassen 46.04 Q, NR 7 1 Muhammed Anas Yahiya 46.10 q 8 1 Mo Il-hwan 46.17 PB 9 2 Rikuya Ito 46.52 Q, SB 10 1 Ashraf Hussein Osman 46.85 11 1 Yasir Ali Al-Saadi 47.01 12 2 Ajith Premakumara Millagaha Gedara 47.07 13 2 Mohamed Nasir Abbas 47.10 14 2 Phitchaya Sunthonthuam 47.15 15 2 Xu Haoran 47.23 SB 16 2 Mehboob Ali 47.61

Final Rank Lane Name Nationality Time Notes 6 Yousef Karam 44.84 NR 7 Abbas Abubakar Abbas 45.14 PB 9 Mikhail Litvin 45.25 NR 4 4 Arokia Rajiv 45.37 PB 5 2 Julian Jrummi Walsh 45.55 SB 6 5 Taha Hussein Yassen 45.74 NR 7 3 Muhammed Anas Yahiya 46.10 8 Rikuya Ito R163.3aLane infringement

References