Sir Murray Louis Tyrrell (1 December 1913 – 13 July 1994) was an Australian public servant. He was the Official Secretary to the Governor-General of Australia from 1947 to 1973. In his record term of 26 years, served six governors-general. In 1959, he was made a Commander of the Order of the British Empire (CBE). In 1977, he was named Australian of the Year with Dame Raigh Roe.