The Diocese of Hong Kong Island is one of the three dioceses under the Hong Kong Sheng Kung Hui, a province of the Anglican Communion.

The cathedral of the diocese, St. John's Cathedral, is the oldest surviving Western ecclesiastical building in Hong Kong.

[2] The incumbent Bishop of Hong Kong Island, Matthias Der, was consecrated as bishop on 3 October 2020 and enthroned on 2 January 2021.

[3] Der succeeded Paul Kwong as bishop of the diocese, who served concurrently as Archbishop and Primate of Hong Kong.

[4] The diocese oversees over 16 churches and chapels across Hong Kong Island and the outlying islands of Hong Kong.