Frank Snowden Katzenbach, Jr. (November 5, 1868 – March 13, 1929) was an American jurist and Democratic party politician from New Jersey. He was an Associate Justice of the New Jersey Supreme Court and was the Democratic nominee for Governor of New Jersey in 1907. He was the brother of New Jersey Attorney General Edward L. Katzenbach and uncle of Nicholas Katzenbach, the United States Attorney General.