Gustaf Eric Carlberg (5 April 1880 – 14 August 1963) was a Swedish Army officer, diplomat, sport shooter, fencer, and modern pentathlete who competed at the 1906, 1908, 1912 and 1924 Olympics alongside his twin brother Vilhelm.
Eric and Vilhelm were the youngest of four children of a veterinarian, who died when they were 12 years old. The twins became military officers in 1901 and retired with the rank of major. In 1911, they became physical education instructors. In 1924, Eric married Elsa Lindell and was stationed for three years in Iran as part of the newly established Iranian Gendarmerie corps. In 1930, he was appointed Swedish consul general in Tehran and, between 1935 and 1958, served as the Finnish consul general there.
25 m rapid fire pistol – eleventh place
30 m duelling pistol – 13th place
20 m duelling pistol – 14th place
25 m army pistol (1873 model) – 18th place
25 m army pistol (standard model) – 27th place
Free rifle, free position – 29th place
Carlberg was a member of the Swedish team that won the silver medal in the team small-bore rifle competition. He also participated in the following shooting events:
disappearing target small-bore rifle – ninth place
moving target small-bore rifle – 15th place
individual pistol – 33rd place
He also participated in the épée competition but was eliminated in the first round. As a member of the Swedish épée team, he was eliminated in the first round of the team épée event.
At the 1912 Summer Olympics, he won two gold and two silver medals in shooting. He also participated in the following shooting events:
30 metre rapid fire pistol – sixth place
50 metre pistol – twelfth place
50 metre rifle, prone – 17th place
25 metre small-bore rifle – 20th place