This article lists the Barbershop Harmony Society's international quartet champions by the year in which they won.
Connelly was the first to achieve both the 3- and 4-time International Quartet Champion milestone, and DeRosa followed by doing so in multiple voice parts.
Gary Lewis has won three times on three different parts with PLATINUM (2000, tenor), Max Q (2007, baritone), and Quorum (2022, bass).
Though the competition is international, only two quartets from outside North America have so far won the gold medal: Ringmasters from Sweden in 2012 and Musical Island Boys from New Zealand in 2014.
Disruption caused by the COVID-19 pandemic resulted in cancellation of the 2020 and 2021 international contests, the only years in the society's 86-year history without one.