See main article: Athletics at the 2008 Summer Paralympics.
The Men's 400m T11 had its first round held on September 14, beginning at 11:15. The Semifinals were held on September 15, at 17:10 and the Final was held on September 16 at 19:54.
| Place | width=250 | Athlete ! | width=100 | Round 1 ! | width=100 | Semifinals ! | width=100 | Final | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 51.84 Q | 51.84 Q | 50.27 | ||||||||
| 2 | 51.52 Q | 51.32 q | 50.44 | ||||||||
| 3 | 52.70 Q | 50.79 Q | 50.82 | ||||||||
| 4 | 52.47 Q | 51.93 q | 52.05 | ||||||||
| 5 | 52.89 q | 51.99 | |||||||||
| 6 | 52.66 q | 52.52 | |||||||||
| 7 | 54.59 q | 54.27 | |||||||||
| 8 | 54.38 q | 54.36 | |||||||||
| 9 | 54.98 | ||||||||||
| 10 | 55.38 | ||||||||||
| 11 | 55.48 | ||||||||||
| 12 | 56.78 | ||||||||||
| DNS | |||||||||||