Athletics at the 2016 Summer Paralympics – Men's 400 metres T53

The Men's 400 metres T53 event at the 2016 Summer Paralympics took place at the Estádio Olímpico João Havelange on 10 and 11 September. It featured 19 athletes.

Records
Prior to the competition, the existing World and Paralympic records were as follows:

Heats
Qualification rule: The first two finishers in each heat (Q) and the next two fastest (q) qualify for the final.