Most Reverend Robert J. Brennan

Bishop Robert J. Brennan was born on June 7, 1962, to Robert and Patricia Brennan in the Bronx, New York. The oldest of five children, Bishop Brennan has two brothers and two sisters, 14 nieces and nephews and three great-nephews and a niece.
He was raised in Lindenhurst, New York, where his parents still reside.  Bishop Brennan attended Our Lady of Perpetual Help Catholic School in Lindenhurst, and St. John the Baptist Diocesan High School, West Islip, New York.  He went on to earn a Bachelor of Science degree in mathematics and computer science from St. John’s University, Queens, New York.

Bishop Brennan studied for the priesthood at the Seminary of the Immaculate Conception, Huntington, New York, was ordained a priest in the Diocese of Rockville Centre, New York, on May 27, 1989, by Bishop John McGann, and was first assigned to the Church of St. Patrick in Smithtown.  In 1994 he was appointed Secretary to the Bishop, working in this capacity for three bishops: the late Bishop John McGann, the late Bishop James McHugh, and Bishop William Murphy.  He resided at St. Agnes Cathedral and served at the parish during those years.

In 2002 he was named Vicar General and Moderator of the Curia for the Diocese of Rockville Centre.  In 2010 he was appointed him pastor of the Church of Saint Mary of the Isle, Long Beach.

On July 25, 2012, he was ordained as Auxiliary Bishop for the Diocese of Rockville Centre.  Leaving his position as pastor in Long Beach at that time, he resided in the parish of Our Lady of Peace in Lynbrook.

Bishop Brennan’s strength lies in parish pastoral activity.  Even while in Diocesan work, he has been afforded the opportunity to engage in many elements of parish life, in both the parishes where he resides as well as in a variety of parish settings. This work has included catechetical ministry, Catholic schools, pastoral care for the sick, and youth ministry.  

While at the Cathedral Parish of St. Agnes, Bishop Brennan came to know the Latino community in the parish and began to study Spanish.  He says this opened new doors in parish ministry and has given him the chance to come to know and love the Latino community on Long Island.  A particular focus of his episcopal ministry has been in service to this community of some 400,000 Catholics.  He speaks of the vibrancy of their faith as a source of inspiration.

While at Rockville Centre, Bishop Brennan has served on the Board of Directors for Catholic Health Services as well as various diocesan boards and committees.  He has served as chaplain for the Catholic Lawyers Guild of Nassau County. He serves on the Board for the Institute for Catholic Schools at his alma mater, St. John’s University.  He served in several capacities on the Catholic Faith Network including serving as one of the co-hosts of the award-winning program Insight.

With the United States Conference of Catholic Bishops, Bishop Brennan served as a member of the Committee for Catholic Education, the Administrative Committee, and the Priorities and Plans Committee.

On September 29, 2021, Bishop Brennan was appointed the 8th Bishop of the Diocese of Brooklyn by Pope Francis. He was installed in the Co-Cathedral of St. Joseph on November 30, 2021.