List of Famous people who died at 83

Leon Charles Beurton was an English Communist who worked as an agent for the Soviet intelligence services.

Karen Avetovich Ter-Martirosyan was a Soviet and Russian theoretical physicist of Armenian descent. He is known for his contributions to quantum mechanics and quantum field theory and the author of several hundred articles in his area.

Juan Landázuri Ricketts was one of the most prominent Roman Catholic Churchmen during the 1960s and 1970s in Latin America. This was a period in which the Church took a strong stance against human rights abuses by numerous military juntas; it also expressed a preference for the poor and concerns about extreme poverty and wealth inequality. Before he turned 80 on December 19, 1993, Juan Landázuri Ricketts was the last Cardinal elevated by Pope John XXIII to retain voting rights in a papal conclave.

Simon Kaurin Slåttvik was a Norwegian skier. He competed at the 1952 Winter Olympics in the Nordic combined and 18 km cross-country skiing and won the gold medal in the former event. Earlier he won a Nordic combined bronze medal at the 1950 World Championships. He won 14 Norwegian titles and was the first Nordic combined athlete to jump over 100 m. Slåttvik won the Nordic combined event at the Holmenkollen ski festival in 1948, 1950 and 1951, and was awarded the Holmenkollen medal in 1951.