The men's 400 metres at the 2019 World Para Athletics Championships was held in Dubai from 7–15 November.
First 1 of each heat (Q) and the next 1 fastest (q) advance to the final.
[5] First 3 in each heat (Q) and the next 2 fastest (q) advance to the final.
[9] First 3 in each heat (Q) and the next 2 fastest (q) advance to the final.
[11] First 3 in each heat (Q) and the next 2 fastest (q) advance to the final.