List of Famous people who died at 90

Octave Levenspiel was a professor of chemical engineering at Oregon State University (OSU). His principal interest was chemical reaction engineering, and he was the author of a major textbook Chemical Reaction Engineering as well as numerous research publications.

Mario Gilberto Agustin Martinez Solares was a Mexican director, cinematographer, screenwriter, and actor who is considered one of the most prolific filmmakers in Mexican cinema having directed more than 160 films, most of them written by him during the Golden Age of Mexican cinema. He is also recognized as the most important comedy director in Mexico.

Grazia Barcellona was an Italian figure skater. She competed in two events at the 1948 Winter Olympics.

Anthony Ernest Pratt was an English musician and the inventor of the English detective-themed board game Cluedo, currently owned and marketed by American entertainment company Hasbro.