Which country did "Rein Me In" top besides the UK and Ireland?

Besides the United Kingdom and Ireland, “Rein Me In” topped the charts in Australia.

The Sam Fender and Olivia Dean duet became a major international success after its release in June 2025. Wikipedia’s summary identifies Australia and Ireland as territories outside the UK where the song reached number one, making Australia the answer to this question.

Its Australian success developed over several weeks on the ARIA Singles Chart. The song first reached the Australian top 10 in February 2026 and later peaked at number two behind Olivia Dean’s “Man I Need.” In the chart week ending 3 April 2026, “Rein Me In” rose to number one and replaced Dean’s song at the top.

New Zealand is an easy country to confuse with Australia because the track also performed strongly there, reaching number two. Canada is another plausible-looking distractor, but the song did not top the Canadian Hot 100. The question asks specifically where it reached number one, not merely where it charted.