Thomas Edmund Molloy (September 4, 1885 – November 26, 1956) was an American prelate of the Roman Catholic Church. He served as Bishop of Brooklyn from 1921 until his death in 1956.
Thomas Molloy was born in Nashua, New Hampshire, the fourth of the eight children of John and Ellen Molloy. He attended Saint Anselm College in Goffstown, New Hampshire, before entering St. Francis College in Brooklyn, New York, in 1904. He then decided to study for the priesthood and was enrolled at St. John's Seminary in Brooklyn. He was later sent to further his studies in Rome at the Pontifical North American College and the Propaganda University. He was ordained a priest by Cardinal Pietro Respighi on September 19, 1908. Upon his return to the United States in 1909, Molloy became a curate at Queen of All Saints Church in Brooklyn. He was later named private secretary to Bishop George Mundelein, accompanying the latter to Illinois following his promotion to Archbishop of Chicago. After a several months in Chicago, he returned to Brooklyn and joined the faculty of St. Joseph's College for Women, serving as spiritual director and professor of philosophy and later president.