David Douglas Crosby OMI (born June 28, 1949) is a Canadian prelate of the Roman Catholic Church.

[3] He graduated from St. Patrick's College at Carleton University in Ottawa in 1972 with a Bachelor of Arts degree in Philosophy and French.

[3] Ordained in 1975, Crosby's first role was as assistant pastor of the Co-Cathedral of Our Lady of Perpetual Help in Labrador City where he served until 1981.

[3] Also during this time, Crosby held various position within the Canadian Conference of Catholic Bishops, including General Secretary.

[4][5] Bishop Crosby took possession of the Diocese during a ceremony at the Cathedral of Christ the King in Hamilton on November 8, 2010.