The Diocese of Singapore is a diocese of the Province of the Anglican Church in South East Asia consisting of 27 Anglican parishes in Singapore and 6 deaneries throughout the Asia region. It has an established history of church-planting as well as providing educational, medical and social services in Singapore and the neighbouring region. The Diocese of Singapore is in communion with the See of Canterbury. St Andrew's Cathedral is the cathedral church of the diocese.

The Church of the Province of South East Asia is an autonomous member of the Anglican Communion, created in 1996 with the four dioceses of Kuching, Sabah, Singapore and West Malaysia.