Trophy competitions which consist of a single match or a two-leg match (e.g. the FA Community Shield, Irish FA Charity Shield, Supercopa de España, Trophée des Champions, the Recopa Sudamericana, the UEFA Super Cup or the Intercontinental Cup) are not counted as part of a treble.
There are few cases of a club winning their country's top tier league and the primary cup competition (The Double), in addition to the major continental tournament, all within a single season. This was first achieved in 1967 by Celtic, winning the Scottish Football League (top tier national league), Scottish Cup (main national cup) and European Cup (main continental tournament).
In total, 19 clubs across six confederations have achieved the feat on 23 occasions since 1962, including seven African clubs, seven European clubs, two Oceanian clubs, two North American clubs and one Asian club. This list does not accommodate secondary continental and domestic competitions, so does neither list Liverpool F.C. winning the domestic League Cup along with the top tier League and the European Cup in 1983–84 nor Al-Ahly winning the continental Cup Winners' Cup alongside the Egyptian domestic double in 1984–85.
In Europe, Spanish club Barcelona is the only club to have won a treble twice.