A treble in association football is achieved when a club team wins three trophies in a single season. A continental treble involves winning the club's top-level domestic league competition, main domestic cup competition, and main continental trophy. Although winning a second-tier continental trophy has also been described as a continental treble, it is not as widely accepted. A domestic treble involves winning three national competitions—including the league title, the primary cup competition, and one secondary competition, such as a secondary cup or state-level league.

Auckland City Football Club is a New Zealand semi-professional football club based in the suburb of Sandringham in Auckland, New Zealand. They currently compete in the Northern League. Auckland City have established themselves as a major force in both New Zealand and Oceania, having won eight New Zealand Football Championship titles and eleven OFC Champions League titles since their foundation.