Denis Mary Bradley (February 25, 1846 – December 13, 1903) was an Irish-born American prelate of the Roman Catholic Church.

[1][2] Bradley was ordained a priest in Troy by Bishop Bernard McQuaid for the Diocese of Portland in Maine on June 3, 1871.

[3] After his ordination, Bradley was given a pastoral assignment to the Cathedral of the Immaculate Conception in Portland, Maine.

In June 1880, Bishop James Healy moved Bradley to the less demanding position of pastor of St. Joseph's Parish in Manchester, New Hampshire.

In the rural parts of New Hampshire, there were many scattered Catholics, and Bradley's first efforts were directed towards providing for them.

[5] At some point in the 1880s, Bradley contacted the Benedictine monks at Saint Mary's Abbey in Newark, New Jersey, about creating a Catholic college in New Hampshire.