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. Its territory covers Hong Kong Island and the outlying islands. The cathedral of the diocese, St. John's Cathedral, is the oldest surviving Western ecclesiastical building in Hong Kong. It was constructed in the 1840s.

The Hong Kong Sheng Kung Hui (abbreviated SKH), also known as the Hong Kong Anglican Church (Episcopal), is the Anglican church in Hong Kong and Macao. It is the 38th Province of the Anglican Communion. It is also one of the major denominations in Hong Kong and the first in the Anglican Communion to ordain a female priest.