Disque D. Deane (July 6, 1921 – November 8, 2010) was a prominent American financier and investor.
Deane was at one time a partner at Lazard, the investment bank, where he revolutionized corporate finance by pioneering sale-leaseback transactions.
Deane held senior positions and directorships at Eastman Dillon Union Securities, RCA Corporation, and Sun Chemical.
He married his second wife, Marjorie Angele Schlesinger, Chairman and Publisher of the Tobe Report in 1952.
A resident of Boston, Deane died at the age of 89 on November 8, 2010, at his home there due to pneumonia.