The 2011–12 Irish League Cup (known as the Irn-Bru League Cup for sponsorship reasons) was the 26th edition of Northern Ireland's secondary football knock-out cup competition. The competition was contested by the 12 members of the IFA Premiership, as well as the 30 members of the IFA Championship. The competition began on 27 August 2011 and ended with the final on 28 January 2012. Lisburn Distillery were the defending champions, following a 2–1 victory over Portadown in the previous season's final. However, they were eliminated in the Third Round by Crusaders.