| Tournament details | |
|---|---|
| Country | Oman |
| Teams | 32 |
| Final positions | |
| Champions | Al-Nasr |
| Runner-up | Al-Seeb |
| Tournament statistics | |
| Matches played | 63 |
| Goals scored | 206 (3.27 per match) |
| Top goal scorer(s) |  Mohammed Al-Hinai Hassan Zaher Al-Maghni Hashim Saleh Hani Al-Dhabit(3 goals) |
The 2005 Sultan Qaboos Cup was the 33rd edition of the Sultan Qaboos Cup (Arabic: كأس السلطان قابوس), the premier knockout tournament for football teams in Oman.
The competition began on 1 September 2005 with the group stage and concluded on 14 November 2005. Dhofar S.C.S.C. were the defending champions, having won their sixth title in 2004. On Monday 14 November 2005, Al-Nasr S.C.S.C. were crowned the champions of the 2005 Sultan Qaboos Cup when they defeated Al-Seeb Club 3-1, winning the title for the fourth time.