Dario Mangiarotti (18 December 1915 – 9 April 2010) was an Italian fencer who competed at the 1948 and 1952 Summer Olympics and medaled in seven World Championships.

He was born in Milan, the son of Giuseppe Mangiarotti, a fencer at the 1908 Summer Olympics in London.

[1] He was taught the sport of fencing by his father and first became the individual Italian épée champion in 1936, a title that he would claim again in 1938, 1940, 1946, 1951, and 1953.

He accumulated a total of seven medals in the team épée events at the FIE World Championships in Fencing: four gold (1937, 1949, 1950, 1953), one silver (1951), and two bronze (1938, 1947).

[1] He won his final title at the 1966 World Masters Championships in Rome in the individual épée category.