Kerry Walter Sibraa AO (born 12 October 1937) is a former Australian Senator who represented the Labor Party for the state of New South Wales. He was educated at North Sydney Boys High School. He served as a Senator for from 13 December 1975 to 30 June 1978, and then again from 9 August 1978 until 1 February 1994, and was President of the Senate from 17 February 1987 to 31 January 1994. During the 1970s Sibraa provided inside-information about Labor to the United States of America in what an historian has called "a discreet relationship".