List of Famous people who died at 89

Aboubakar Sangoulé Lamizana was a Burkinabé military officer who served as the President of Upper Volta, in power from January 3, 1966, to November 25, 1980. He held the additional position of Prime Minister from February 8, 1974, to July 7, 1978.

Georges Louis Bouligand was a French mathematician who introduced paratingent cones and contingent cones.

Belle Mitchell was an American film actress. She appeared in over 100 films between 1915 and 1978. She was born in Croswell, Michigan and died in Woodland Hills, Los Angeles.

Margaret Livingston, sometimes credited as Marguerite Livingstone or Margaret Livingstone, was an American film actress and businesswoman, most notable for her work during the silent film era. She is best known today as "the Woman from the City" in F.W. Murnau's 1927 film Sunrise: A Song of Two Humans.

Mário João de Oliveira Ruivo GOSE • GOIH • GCM, known as Mário Ruivo, was a Portuguese scientist and politician, a pioneer in the defense of the ocean and the environment in Portugal. He briefly held ministerial offices in the Portuguese government after the Carnation Revolution, but spend most of his career in senior positions in numerous governmental and non-governmental environmental agencies and scientific organisations.

Theodor Meyer was a German mathematician, a student of Ludwig Prandtl, and a founder of the scientific discipline now known as compressible flow or gas dynamics.