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 normally counted as part of a treble.
This list includes clubs who have won 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, Scottish Cup and European Cup.
In total, 19 clubs across five confederations have achieved the feat on 23 occasions since 1967, including seven African clubs, seven European clubs, two Oceanian clubs, two North American clubs and one Asian club. This list does not include secondary continental and domestic competitions, along with Liverpool 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 this treble twice.
A domestic treble consists of a club winning three of their country's competitions (top-tier league, cup, league cup, etc), all during one season. Many countries do not have a third domestic competition (such as a League Cup), besides competitions consisting of a single match or a two-leg match (e.g. Supercups), so achieving a domestic treble is impossible (modern examples include Germany and Italy).