List of Famous people who died at 91

Reinhold Stecher was an Austrian Prelate of the Roman Catholic Church.

Sanford "Sandy" Meisner was an American actor and acting teacher who developed an approach to acting instruction that is now known as the Meisner technique. While Meisner was exposed to method acting at the Group Theatre, his approach differed markedly in that he completely abandoned the use of affective memory, a distinct characteristic of method acting. Meisner maintained an emphasis on "the reality of doing", which was the foundation of his approach.

Curt Meyer was a German mathematician. He made notable contributions to number theory.

Tomás Balduíno, O.P. was a diocesan bishop of the Roman Catholic Church in Brazil.

Erik Holmberg was a Swedish astronomer and cosmologist. He is most famous for his work in the effects of interacting galaxies. This research showed that galaxies that came near each other would likely combine to form a larger galaxy.