Gustav Fischer was a Swissequestrian athlete who competed at five Summer Olympic Games, winning a total of five medals. He won medals in the team dressage events in the 1952, 1956, 1964, and 1968 games; there was no team dressage event held in 1960, but he won an individual dressage medal in that year. In 1968, he and fellow equestrian Henri Chammartin jointly became the second Swiss sportspersons to compete at five Olympic Games.
Fischer first competed in the 1952 Summer Olympics in Helsinki, Finland at the age of 36, in both the individual and team dressage events. He came in a disappointing 8th place in the individual event, behind both of his Swiss teammates; Gottfried Trachsel, who finished 4th, and Henri Chammartin, who finished 6th. However, he earned the first of five Olympic medals, a silver, in the team event with Trachsel and Chammartin. Four years later, at the 1956 Summer Olympics in Stockholm, Sweden, Fischer again medaled in the team event, and again fell short in the individual. This time, Trachsel, Chammartin, and Fischer took bronze, and finished 6th, 8th, and 10th respectively in the individual event. Of the three athletes, only Fischer and Chammartin would compete in the 1960 Summer Olympics in Rome, Italy, although in any case no team dressage event was held that year. However, Fischer found new success, winning second place and a silver medal in the individual dressage competition, the only individual medal of his career. The 1964 Summer Olympics in Tokyo, Japan, saw Fischer as the oldest member of the Swiss team, at 48 years of age. That year, he just missed winning a second individual medal in dressage, taking fourth place while his teammate Henri Chammartin took gold. However, with Chammartin and 21-year-old Marianne Gossweiler, the youngest Swiss equestrian athlete at the games, Fischer earned yet another silver medal in team dressage. He won his final Olympic medal at the 1968 Summer Olympics in Mexico City, Mexico at the age of 52, a bronze in team dressage, again with Chammartin and Gossweiler.
