Carlisle Albert Herman Trost (April 24, 1930 – September 29, 2020) was a United States Navy officer who served as the 23rd Chief of Naval Operations (CNO) and a member of the Joint Chiefs of Staff from July 1, 1986 to June 29, 1990. He oversaw the Navy during the end of the Cold War, and the preparations for the Gulf War of 1991. He retired from active naval service on July 1, 1990, following completion of a four-year term as CNO.