William Bernard Barry (July 21, 1902 - October 20, 1946), United States politician, was born in County Mayo, Ireland and immigrated to the United States in 1907 with his parents, who settled in Queens County, New York.
Barry attended public schools and graduated from New York University in 1925 and from NYU School of Law in 1929. He was admitted to the bar in 1929 and commenced practice in New York City. Barry served as assistant district attorney of Queens County, N.Y., in 1932 and 1933. He was special United States attorney for the Department of Justice between 1933 and 1935 and a member of the Democratic executive committee of Queens County between 1930 and 1935. He was elected as a Democrat to the Seventy-fourth Congress to fill the vacancy caused by the resignation of William F. Brunner and was reelected to the Seventy-fifth and to the four succeeding Congresses and served from November 5, 1935, until his death in New York on October 20, 1946.