This is a list of notable Seton Hall Preparatory School alumni. This includes graduates and non-graduate former students of Seton Hall Prep.
Military
Admiral Robert J. Kelly (born 1938, class of 1955), former Commander-in-Chief of the U.S. Pacific Fleet. John P. Washington (1908-1943), Army chaplain who was one of the Four Chaplains who gave their lives to save soldiers during the sinking of the troop transport . Charles J. Watters (1927-1967), Army chaplain who was awarded the Medal of Honor posthumously for bravery exhibited while rescuing wounded men in the Battle of Dak To, Vietnam.
Business, government and academia
John P. Caufield (1918–1986), politician and public safety official from Newark who served 20 years as the Fire Director for the Newark Fire Department and seven years in the New Jersey Senate. Thomas P. Giblin (born 1947), politician who has served since 2006 in the New Jersey General Assembly where he has represented the 34th legislative district. Patrick E. Hobbs (born 1960), Dean of Seton Hall University School of Law. Shavar Jeffries, attorney and candidate in the 2014 election for Mayor of Newark. James F. Kelley (1902–1996), President of Seton Hall College (since renamed as Seton Hall University) from 1936 to 1949. W.J. "Jim" Lane (born 1951), Mayor of Scottsdale, Arizona. Mike Purzycki (born 1945), Mayor of Wilmington, Delaware. Jay P. Rolison Jr. (1929-2007, class of 1947), lawyer and politician from New York who served in the New York Senate from 1967 to 1990. Robert A. Salerno Associate judge on the Superior Court of the District of Columbia. Paul V. Scura, former Executive Vice President and Head of Investment Bank of Prudential Securities and current Trustee of Seton Hall Prep. John Sheridan (1942-2014), lawyer and government official who served as Commissioner of the New Jersey Department of Transportation. James R. Zazzali (born 1937), former Chief Justice of the New Jersey Supreme Court.
Religion
Bishop Arthur Serratelli (born 1944), Bishop of Paterson Diocese in New Jersey. Frank Joseph Rodimer, Bishop of Paterson
Literature and entertainment
Bill Bellamy (born 1965), actor, comedian. Troy CLE, author of The Marvelous Effect. Al Eschbach, radio personality Ted Leo (born 1970), vocalist/guitarist of Ted Leo and the Pharmacists. Brandon Scoop B Robinson (born 1985), NBA analyst Matt Sweeney (born 1969), guitarist/vocalist who has played in various groups, including 1990s bands Zwan with Billy Corgan, Skunk and Chavez.