List of Famous people who died at 84

Achille Castiglioni was an Italian designer of furniture, lighting, radiograms and other objects.

Richard Courant was a German American mathematician. He is best known by the general public for the book What is Mathematics?, co-written with Herbert Robbins.

György Kárpáti was a Hungarian water polo player who competed in the 1952 Summer Olympics, 1956 Summer Olympics, 1960 Summer Olympics, and 1964 Summer Olympics. He is one of eight male athletes who won four or more Olympic medals in water polo, and one of ten male athletes who won three Olympic gold medals in water polo.

Giuliano Carnimeo was an Italian director and screenwriter, sometimes credited as Anthony Ascott or Antony Ascot.

Margono Djojohadikusumo was an Indonesian politician and banker. He was the founder and the first president of Bank Negara Indonesia, and was also a member of the Investigating Committee for Preparatory Work for Independence.

Sylvester Stadler was a high-ranking commander of the Waffen-SS, a commander of the SS Division Hohenstaufen, previously having been the commander of the SS regiment whose 3rd Company responsible for the Oradour-sur-Glane massacre. Only 34 years old at the end of the war, he held the rank of SS-Brigadeführer and generalmajor of the Waffen SS and was a recipient of the Knight's Cross with Oak Leaves.