2025 T20I Inter-Insular Series
The 2025 Men's T20I Inter-Insular Series, consisting of three Twenty20 International matches, took place at the Grainville Cricket Ground, Saint Saviour, Jersey, in June 2025. This was the sixth men's Twenty20 Inter-Insular series, and the fifth to be played with official T20I status. Jersey were the defending champions, having won the 2024 series 2–1.
Jersey and Guernsey had played an Inter-Insular cricket match annually since 1950, generally as 50-over contests. A Twenty20 series was played for the first time in 2018. The T20 series has had official T20I status since the 2019 T20 Inter-Insular Cup, following the International Cricket Council's decision to grant T20I status to all matches played between Associate Members after 1 January 2019.
Guernsey's preparations included a win against a Marylebone Cricket Club team in Saint Peter Port before travelling to Jersey.
After the first two matches were split, Jersey won the decider by three runs to retain the trophy 2–1.
A women's match was played on 5 July at the King George V Sports Ground in Castel. Jersey won the rain-shortened contest by 89 runs under the DLS method.
On 9 August 2025, the men's teams also contested the 71st annual Inter-Insular Trophy 50-over match at King George V Sports Ground. Jersey won by eight wickets to retain the trophy.