Futebol Clube do Porto, a Portuguese sports club based in Porto, was founded in 1893. Its association football team played its first competitive matches in 1911, when it took part and won the first edition of the José Monteiro da Costa Cup. Two years later, the club began competing in the Campeonato do Porto, a regional championship organised by the district football association. In 1921–22, Porto won the inaugural Campeonato de Portugal, a nationwide competition to determine the Portuguese champion among the winners of the regional championships.
The Primeira Liga was established in 1934–35 as an experimental nationwide competition played in a league format, and was contested in parallel with the Campeonato de Portugal. Porto were its first winners and repeated the triumph in 1938–39, when it became the official top-tier championship in place of the Campeonato de Portugal, which was converted into the Taça de Portugal. Porto is one of three clubs, together with Benfica and Sporting CP, to have never been relegated from the Primeira Liga since its establishment. Between 1940 and 1978, Porto endured the darkest period of its league history, during which they collected only two titles (1955–56 and 1958–59), and recorded an all-time low ninth place (1969–70). Since incumbent president Jorge Nuno Pinto da Costa took office in 1982, Porto have experienced routine league success, winning the competition 20 times in 32 seasons – five of them in succession (1995–1999), a record in Portuguese football. They achieved their first league and cup double in 1956, and have repeated it six more times (1988, 1998, 2003, 2006, 2009, 2011).
Porto's debut in international competitions took place in 1956–57, when they competed in the second edition of the European Cup. They reached their first European final in 1984, losing the Cup Winners' Cup to Juventus, and won their first European silverware three years later, beating Bayern Munich in the 1987 European Cup Final. The following season, Porto collected the European Super Cup and Intercontinental Cup trophies. In 2003, they won the UEFA Cup for the first time, becoming the only Portuguese team to have won any of these three international trophies.