List of Famous people who died at 91

Eurico Dias Nogueira was a Portuguese Prelate of Roman Catholic Church.

Johannes Joseph "Jon" van Rood was a Dutch immunologist. He founded Eurotransplant in 1967, a non-profit organization responsible for encouraging and coordinating organ transplants.

Lettice Sandford was a draftsman, wood-engraver, pioneer corn dolly revivalist and watercolourist of her beloved Herefordshire. She was a daughter of Lachlan Mackintosh Rate of Milton Court, Surrey, a director of the Imperial Ottoman Bank, the central bank of the Ottoman Empire, and wife of Christopher Sandford of Eye Manor, Herefordshire, proprietor of the Golden Cockerel Press, for which she provided wood-engravings. She was the mother of playwright Jeremy Sandford.

George Wells was an American screenwriter and producer, best known for making light comedies and musicals for MGM.

Anatoly Petrovich Alexandrov, also known as A.P Alaexandrov, was a Russian physicist, director of the Kurchatov Institute, academician and president of the Academy of Sciences of the USSR (1975–1986).

Vladimir Prelog ForMemRS was a Croatian-Swiss organic chemist who received the 1975 Nobel Prize in chemistry for his research into the stereochemistry of organic molecules and reactions. Prelog was born and grew up in Sarajevo. He lived and worked in Prague, Zagreb and Zürich during his lifetime.

Oskar Sala was a 20th-century German physicist, composer and a pioneer of electronic music born in Greiz. He played an instrument called the Trautonium, a predecessor to the synthesizer.