List of Famous people who died at 91

Harold Lane David was an American lyricist. He grew up in New York City. He was best known for his collaborations with composer Burt Bacharach and his association with Dionne Warwick.

Karl Kurt Friedrich Ude was a German journalist and writer.

Simone Del Duca was a French businesswoman, a member of the Académie des Beaux-Arts, and major philanthropist. Married to French publishing magnate Cino Del Duca, on his death in 1967 she was left with a considerable fortune. Although she remained on the board of directors of her late husband's companies, Simone Del Duca devoted a great deal of her time to philanthropic causes. In 1969 she established a prestigious literary prize in her husband's name. The Prix mondial Cino Del Duca provides a substantial cash prize and was made open to qualified persons from anywhere in the world.

Beno Eckmann was a Swiss mathematician who was a student of Heinz Hopf.