| Sultan Qaboos Cup | |
| Year: | 2012–13 |
| Country: |  Oman |
| Num Teams: | 32 |
| Champions: | Al-Suwaiq |
| Runner-Up: | Al-Nahda |
| Matches: | 33 |
| Goals: | 108 |
| Top Goal Scorer: | Ali Al-Marhoon (3 goals) |
| Prevseason: | 2011 |
| Nextseason: | 2013–14 |
The 2012–13 Sultan Qaboos Cup was the 40th edition of the Sultan Qaboos Cup (Arabic: كأس السلطان قابوس), the premier knockout tournament for football teams in Oman.
The competition began on 30 November 2012 with the Round of 32 and concluded on 26 May 2013. Dhofar S.C.S.C. were the defending champions, having won their eighth title in 2011. Al-Suwaiq Club were crowned the champions of the 2012 Sultan Qaboos Cup when they defeated Al-Nahda Club 2-0,[1] winning the title for the third time.[2]
This year the tournament had 32 teams. The winners qualified for the 2014 AFC Cup.
32 teams played a knockout tie. 16 ties were played over one leg. The first match played was between Fanja SC and Al-Nahda Club on 30 November 2012. 16 teams advanced to the Round of 16.
------------------------------------------------------------
16 teams played a knockout tie. 8 ties were played over one leg. The first match was played between Al-Salam SC and Bowsher Club on 24 December 2012. 8 teams advanced to the Quarterfinals.
----------------------------
8 teams played a knockout tie. 4 ties were played over one leg. The first match was played between Al-Oruba SC and Al-Tali'aa SC on 25 February 2013. Al-Oruba SC, Al-Nahda Club, Dhofar S.C.S.C. and Al-Suwaiq Club qualified for the Semifinals.
------------
4 teams played a knockout tie. 2 ties were played over two legs. The first match was played between Al-Suwaiq Club and Al-Oruba SC on 16 April 2013. Al-Suwaiq Club and Al-Nahda Club qualified for the Finals.
----
----