2012–13 Irish Cup
| Tournament details | |
|---|---|
| Country | Northern Ireland |
| Teams | 119 |
| Defending champions | Linfield |
| Final positions | |
| Champions | Glentoran (21st win) |
| Runners-up | Cliftonville |
| Tournament statistics | |
| Matches played | 121 |
| Goals scored | 480 (3.97 per match) |
The 2012–13 Irish Cup was the 133rd edition of the Irish Cup, Northern Ireland's premier football knockout cup competition. The competition began on 15 September 2012 with the first round and ended on 4 May 2013 with the final. The cup was sponsored by JJB Sports until October 2012, when the company went into administration. The competition remained without a principal sponsor, but the final was known as the Marie Curie Irish Cup final, after the IFA awarded the naming rights for the final to the charity Marie Curie Cancer Care.
Linfield were the defending champions, after defeating Crusaders 4–1 in the 2012 final to win the cup for the sixth time in seven seasons. However, in a tie that was a repeat of the previous two finals, they were knocked out in the fifth round by Crusaders, who inflicted Linfield's first defeat in the competition in four years.
The eventual winners were Glentoran, coming from a goal behind to defeat Cliftonville 3–1 after extra time to win their first Irish Cup in nine years. Glentoran qualified for the 2013–14 UEFA Europa League first qualifying round.