Student, Hall School, London, 1936; student, St. Paul's School, London, 1936-1939; certificate, Oxford-Cambridge School, 1938.
Founder John Weitz Designs, Incorporated, New York York City, from 1954.
Board of directors emeritus The Allen-Stevenson School, New York City. Board directors William J. Donovan Foundation, Veterans of Office of Strategic Services, American Council n Germany. Member president's county Museum City of New York Captain Military Intelligence Army of the United States, 1942-1946, European Theatre of Operations.
Member The Pilgrims, Union Club, Century Association, Special Forces Club, Old Pauline Club (vice president, London), The Naval Club (London), Vintage Sports Car Club American, Sports Car Club American, Road Racing Drivers Club, United States Navy Academy.Sailing Squadron, Sag Harbor Yacht Club.
Married Susan Kohner, August 30, 1964. Children: Paul John, Christopher John. Children by previous marriage: Karen Weitz Curtis, Robert.