Bernard John McQuaid (December 15, 1823 – January 18, 1909) was an American prelate of the Catholic Church. He was the first and longest-serving Bishop of Rochester, serving for 40 years from 1868 until his death in 1909. He previously served as the first president of Seton Hall University (1856-1868). As a bishop, McQuaid was a leading voice of the American church's conservative wing. He publicly clashed with the liberal-minded Archbishop John Ireland and vigorously opposed Americanism.