John Clydesdale Cushman (1887 – June 29, 1955) was an American businessman who co-founded the real estate firm Cushman & Wakefield in 1917 with Bernard Wakefield, who later became his brother-in-law.
Born in Summit, New Jersey, Cushman attended Phillips Exeter Academy."J. C. Cushman, 68, A Realty Leader; Head of Large Brokerage and Management Firm for Midtown Buildings Dies", The New York Times, June 30, 1955. Accessed October 27, 2025. "Upper Montclair, N. J., June 29-J. Clydesdale Cushman, president and chairman of the board of directors of Cushman & Wakefield, Inc., real estate brokers in New York, died today, after a short illness at his home, 338 North Mountain Road. He was 68 years old. Born in Summit, Mr. Cushman had lived here for the last forty years." He died on June 29, 1955, at his home in Upper Montclair, New Jersey. His great-grandfather was New York real estate executive Don Alonzo Cushman.
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