List of Famous people who died at 86

Richard Davis Anderson, Sr. was an American mathematician known internationally for his work in infinite-dimensional topology. Much of his early work focused on proofs surrounding Hilbert space and Hilbert cubes.

William Edward Cousins was an American prelate of the Catholic Church. He served as Bishop of Peoria (1952-1958) and later Archbishop of Milwaukee (1958-1977).

Roger Baens was a Belgian cyclist.

Wolfgang Hahn was a German mathematician who worked on special functions, in particular orthogonal polynomials.

Clóvis Frainer was a Roman Catholic archbishop.

Paul Osborn was an American playwright and screenwriter. Osborn's original plays are The Vinegar Tree, Oliver Oliver, and Morning's at Seven and among his several successful adaptations, On Borrowed Time has proved particularly popular. He wrote the screenplays for East of Eden (1955) and South Pacific (1958), among other films.

Helen Parkhurst was an American educator, author, lecturer, the originator of the Dalton Plan, founder of The Dalton School and host of "Child's World with Helen Parkhurst" on ABC Television Network. Parkhurst took her cues from developmental psychologist Jean Piaget and education reformers such as John Dewey and Horace Mann, producing a progressive education philosophy emphasizing the development of the “whole child."