The Episcopal Diocese of Long Island is the diocese of the Episcopal Church in the United States of America with jurisdiction over the counties of Kings, Queens, Nassau and Suffolk, which comprise Long Island, New York.

[1] On the Feast of Theodore of Tarsus, September 19, 2009, Lawrence C. Provenzano was ordained and consecrated as Bishop Coadjutor of the Episcopal Diocese of Long Island.

On December 10, 2024, Provenzano announced he would retire in September 2026.

Lawrence C. Provenzano, bishop (2009–present) The Diocese has benefited from large endowments, for example, $10,000 given in 1908 by Roslyn, New York resident John Ordronaux.

[9] In 2023, as part of the Uncovering Parish Histories project, the diocese started to investigate its connections to slavery and abolition.