The 2019–20 Northern Ireland Football League Cup (known as the BetMcLean League Cup for sponsorship purposes) was the 34th edition of Northern Ireland's football knock-out cup competition for national league clubs, and the sixth edition of the competition as the Northern Ireland Football League Cup. This season's League Cup was contested by 35 of the 36 clubs that started the season in the three divisions of the Northern Ireland Football League. The competition began on 10 August 2019 with the first round, and concluded on 15 February 2020 with the final. The competition was sponsored by McLean Bookmakers.