The Scottish Professional Football League Challenge Cup, commonly known as the Scottish League Challenge Cup or Scottish Challenge Cup, is an association football knock-out cup competition. It is contested by 32 clubs, which in the 2015–16 season includes the 30 members of the Scottish Championship, Scottish League One and Scottish League Two. The other two first round places are filled by the Highland League champions and the Lowland League champions. The competition is run by the Scottish Professional Football League, and is named the Petrofac Training Cup after sponsor Petrofac.
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 Scottish Football League. 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 Rangers, who defeated Peterhead in the 2016 final.