Scottish Challenge Cup

Not to be confused with the Scottish Cup, or the Scottish League Cup.

The Scottish Professional Football League Challenge Cup, commonly known as the Scottish League Challenge Cup or Scottish Challenge Cup, and currently known as the Irn Bru Cup for sponsorship reasons, is an association football knock-out cup competition run by the Scottish Professional Football League (SPFL). It was established by the SPFL's predecessor, the Scottish Football League (SFL) and was originally contested by the 28 or 30 SFL/SPFL teams below the top level in the Scottish football league system. Teams below SPFL level were added in 2011–12, and guest teams from outside Scotland in 2016–17. For the 2018–19 edition there are 58 teams: 30 from the SPFL; the twelve under-20 teams of the Scottish Premiership clubs; four each from the Highland League and Lowland League; and two guest teams from each of the NIFL Premiership, Welsh Premier League, English National League, and League of Ireland Premier Division.

The competition was first held during the 1990–91 season as the B&Q Centenary Cup to celebrate the 100th anniversary of the formation of the SFL. It was intended to be a one-off competition but was continued due to its popularity. The first winner of the tournament was Dundee, who defeated Ayr United. Falkirk are the most successful team in the tournament, with four wins, most recently in 2012. The most recent winner was Inverness Caledonian Thistle, who defeated Dumbarton in the 2018 final.