Furmark (28 September 1931 - 4 January 2001) was a New York businessman who played a role in the Iran-Contra affair in a number of ways, including acting as a link between CIA Director William Casey and Saudi billionaire Adnan Khashoggi, who financed the arms deal at the center of the affair.
In 1986 the Los Angeles Times reported that Furmark had known Casey and Khashoggi for about 20 years.