Kenneth T. Derr

Kenneth Tindall Derr (August 4, 1936 – July 12, 2024) was an American businessman who was a member of the board of directors of the Halliburton Company. A chairman of the board at Chevron Corporation, he served as the oil company's Chairman and CEO from January 1, 1989 to December 31, 1999, when he was succeeded by David J. O'Reilly. Derr was also a chairman of the board of Calpine Corporation, a director of Citigroup Inc., and a director of Potlatch Corporation. He was a Council on Foreign Relations member.