After actively participating in the Spanish Civil War, Samaranch studied commerce at IESE Business School in Barcelona.
He had a short career as a sports journalist for La Prensa, which ended in his dismissal in 1943 for criticising the supporters of Real Madrid C.F. after that club's 11–1 defeat of FC Barcelona, and then joined his family's textile business.
He joined the board of La Caixa, Spain's largest savings bank, in 1984, and served as President of the board from 1987 to 1999.
He remained as honorary president from his retirement in 1999 to his death.

Samaranch served on the municipal government of Barcelona, with responsibility for sports, from 1955 to 1962.
He was a procurador (member of the lower house) of the Cortes Españolas during the last decade of the Franco regime, from 1964 until the restoration of democracy in 1977.
From 1967 to 1971, he also served as "national delegate" (minister) for sports, and from 1973 to 1977 he was the president of the diputación (governing council) of the Province of Barcelona.
He was appointed Spanish ambassador to the Soviet Union and Mongolia in 1977, immediately after the restoration of diplomatic relations between the countries: this post helped him to gain the support of the Soviet bloc countries in the election to the presidency of the IOC, held in Moscow in 1980.

He had been the chef de mission of the Spanish team at a number of Olympic events, before he was appointed Government Secretary for Sports by Spanish Head of State Francisco Franco in 1967.
He also became the president of the Spanish National Olympic Committee and a member of the IOC.
He was vice-president of the IOC from 1974 to 1978.
After actively participating in the Spanish Civil War, Samaranch studied commerce at IESE Business School in Barcelona. He had a short career as a sports journalist for La Prensa, which ended in his dismissal in 1943 for criticising the supporters of Real Madrid C.F. after that club's 11–1 defeat of FC Barcelona, and then joined his family's textile business. He joined the board of La Caixa, Spain's largest savings bank, in 1984, and served as President of the board from 1987 to 1999. He remained as honorary president from his retirement in 1999 to his death.
Samaranch served on the municipal government of Barcelona, with responsibility for sports, from 1955 to 1962. He was a procurador (member of the lower house) of the Cortes Españolas during the last decade of the Franco regime, from 1964 until the restoration of democracy in 1977. From 1967 to 1971, he also served as "national delegate" (minister) for sports, and from 1973 to 1977 he was the president of the diputación (governing council) of the Province of Barcelona. He was appointed Spanish ambassador to the Soviet Union and Mongolia in 1977, immediately after the restoration of diplomatic relations between the countries: this post helped him to gain the support of the Soviet bloc countries in the election to the presidency of the IOC, held in Moscow in 1980.
He had been the chef de mission of the Spanish team at a number of Olympic events, before he was appointed Government Secretary for Sports by Spanish Head of State Francisco Franco in 1967. He also became the president of the Spanish National Olympic Committee and a member of the IOC. He was vice-president of the IOC from 1974 to 1978.
Juan Antonio Samaranch