The men's decathlon event at the 2005 Asian Athletics Championships was held in Incheon, South Korea on September 3–4.
Results
The highest mark recorded in each event is highlighted in yellow
| Rank | Athlete | Nationality | 100m | LJ | SP | HJ | 400m | 110m H | DT | PV | JT | 1500m | Points | Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
Pavel Andreev |  Uzbekistan |
11.71 | 6.99 | 14.87 | 2.05 | 51.83 | 15.78 | 46.04 | 4.80 | 60.80 | 4:34.53 | 7744 | SB |
 |
Kim Kun-Woo |  South Korea |
11.31 | 7.44 | 13.14 | 1.99 | 48.58 | 15.05 | 36.28 | 4.40 | 49.14 | 4:08.63 | 7694 | |
 |
Hiromasa Tanaka |  Japan |
11.04 | 7.01 | 12.14 | 1.84 | 50.86 | 15.61 | 38.39 | 4.80 | 60.80 | 4:49.10 | 7351 | |
| 4 | Meng Hsiang-Tsu |  Chinese Taipei |
11.33 | 7.17 | 11.94 | 2.05 | 51.75 | 15.89 | 38.34 | 4.50 | 58.25 | 5:01.39 | 7232 | |
| 5 | Kulwinder Singh |  India |
11.08 | 6.64 | 13.46 | 1.81 | 49.64 | 15.82 | 39.86 | 4.10 | 58.41 | 4:45.04 | 7157 | |
| 6 | Jora Singh | India |
11.45 | 6.44 | 13.57 | 1.78 | 50.40 | 15.80 | 46.34 | 4.00 | 56.01 | 4:47.71 | 7032 | |
| 7 | Hadi Sepehrzad |  Iran |
11.18 | 6.30 | 14.81 | 1.84 | 50.90 | 15.54 | 45.89 | 3.60 | 50.46 | 5:05.45 | 6889 | SB |
| 8 | Boonkete Chalon |  Thailand |
11.32 | 6.72 | 11.31 | 1.84 | 49.64 | 16.05 | 35.26 | 4.00 | 48.53 | 4:46.18 | 6718 | |
| 9 | Bui Van Ha |  Vietnam |
11.30 | 6.49 | 10.47 | 1.84 | 51.65 | 15.67 | 31.86 | 4.00 | 48.83 | 4:43.23 | 6524 | |
| 10 | Ravi Ratheeshan |  Sri Lanka |
11.38 | 7.05 | 9.25 | 1.78 | 51.31 | 16.24 | 31.26 | 3.30 | 43.87 | 4:52.05 | 6140 | |
| Pavel Dubitskiy |  Kazakhstan |
11.45 | 7.23 | 12.25 | 2.11 | 52.91 | 15.45 | 39.92 | 4.50 | 50.05 | DNS | DNF | ||
| Hsiao Szu-Pin | Chinese Taipei |
11.16 | 6.64 | 13.32 | NM | DNS | – | – | – | – | – | DNF | ||
| Vu Van Huyen | Vietnam |
11.21 | 6.85 | 10.74 | DNS | – | – | – | – | – | – | DNF |