James Edwin Cassidy

James Edwin Cassidy (August 1, 1869 – May 17, 1951) was an American prelate of the Roman Catholic Church. He served as Bishop of Fall River from 1934 until his death in 1951.

James Cassidy was born in Woonsocket, Rhode Island, to James and Mary (née Byrne) Cassidy. His parents were both Irish immigrants; his father was from County Waterford and his mother from County Armagh. He attended St. Charles College in Ellicott City, Maryland, and St. Mary's Seminary in Baltimore. He continued his studies at the Pontifical North American College in Rome. He was ordained to the priesthood on September 8, 1898.

Cassidy served as professor of science at St. Joseph's Seminary in Yonkers, New York, where he also served as treasurer for three years. He then served in Attleboro, Massachusetts, and later became chancellor of the Diocese of Fall River. From 1908 to 1913, he served as rector of St. Mary's Cathedral. He was named vicar general (1909) and a domestic prelate (1912) before becoming pastor of St. Patrick's Church in Fall River in 1913.