List of Famous people who are 91

Carlisle Albert Herman Trost 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.

Nevzat Ayaz is a former Turkish civil servant and True Path Party politician. He was governor of Istanbul Province from 1979 to 1988. He was elected to the Grand National Assembly of Turkey in 1991, and was Minister of Defence and Minister of Education.

Pierre Bellon is a French billionaire businessman, the founder of Sodexo, a multinational food service and facilities management company.

Nicole Marthe Le Douarin is a developmental biologist known for her studies of chimeras, which have led to critical insights regarding higher animal nervous and immune systems.