William ("Bill") Thomas Robertson CBE, MC (2 February 1917 – 2 January 2011) was one of the founders of the Australian Secret Intelligence Service (ASIS), and served as the agency's Director-General from 1968 until he was sacked by Prime Minister Gough Whitlam in controversial circumstances in 1975. He also served in World War II as an infantry officer and the chief of staff of an Australian and two British divisions.