2023 Men's T20I Inter-Insular Series

The 2023 Men's T20I Inter-Insular Series, consisting of three Twenty20 International (T20I) matches, took place at the Farmers Cricket Club Ground in St Martin in July 2023. This was the fourth Twenty20 Inter-Insular series, and the third to be played with official T20I status. Jersey were the defending champions, having won the 2022 series 3–0.

Jersey and Guernsey have 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. Since the 2019 T20 Inter-Insular Cup the T20 series has had official T20I status, following the International Cricket Council's decision to grant T20I status to all matches played between Associate Members after 1 January 2019.

Jersey won the first match by seven wickets, helped by a century opening partnership between Charlie Brennan and Harrison Carlyon. Jersey sealed the series by winning the second match by four wickets, before the third game was abandoned due to a heavy downpour.

Immediately after the series, Guernsey captain Josh Butler switched his focus to managing the island's table tennis team at the 2023 Island Games.