| Tournament details | |
|---|---|
| Country |  Cambodia |
| Teams | 28 |
| Final positions | |
| Champions | Phnom Penh Empire |
| Runner-up | Preah Khan Reach |
| Tournament statistics | |
| Top goal scorer(s) | Sok Chanraksmey (12 goals) |
Hun Sen Cup is the main football knockout tournament in Cambodia. The 2008 Hun Sen Cup was the 2nd season of the Hun Sen Cup, the premier knockout tournament for association football clubs in Cambodia involving Cambodian League and provincial teams organized by the Football Federation of Cambodia.
Khemara Keila FC were the defending champions, having beaten Nagacorp 4–2 on penalty shoot-out after extra time 1-1 in the previous season's final.