Bishop John Gallagher (1846-1923) was an Irish born priest who served as the Roman Catholic Bishop of Goulburn, Australia.Born in Castlederg, Ireland in 1846, he was ordained in 1869 for the diocese of Goulburn by the Archbishop of Sydney Cardinal Moran. He served as a priest in Goulburn, Dr Gallagher a noted classicist, taught at St Patrick's College, Goulburn, where he served as President of the College from 1875 until 1888.Dr Gallagher was appointed Titular Bishop of Adrassus, co-adjutor Bishop of Goulburnand in 1900 Bishop of Goulburn.In 1916 he laid the foundation stone of Sacred Heart Church, Cootamundra.