FC Baník Ostrava is a Czech football club founded on 8 September 1922 under the name SK Slezská Ostrava, when twenty activists — mostly poor miners from the Kamenec mining settlement — signed the founding charter at the U Dubu restaurant. The club's name, meaning "Miner" in Czech and finally adopted in the 1950s, directly reflects the working-class, mining origins of the club from the industrial heart of Czech Silesia.
The club made its debut in the professional Moravian-Silesian league in 1934, but it was 1937 that brought a genuine sensation, when Slezská Ostrava was promoted to the Czechoslovak top flight and, in its very first match, defeated the aristocratic Sparta Prague 3–2, signalling the arrival of a new force in the national game. In 1959, the club moved to the newly built Bazaly stadium, constructed on the site of a former basalt mine, replacing the previous ground at Stará Střelnice, whose pitch had been covered in slag rather than grass.
The club's golden era came between 1976 and 1983, when Baník, managed by the legendary coach Evžen Hadamczik, won four Czechoslovak championship titles, three of them within just five seasons, and went unbeaten at home for nearly five years. During this period, players such as Pavel Kuka and Jiří Knobloch shone in the club's colours, and the team also reached a European semi-final. Hadamczik's own story, however, ended in tragedy — after being appointed head coach of the Czechoslovak team for the 1984 Olympic Games, which were ultimately boycotted by the Eastern Bloc countries, he took his own life shortly afterwards.
The team, nicknamed Baníček and Chachaři, plays in distinctive blue and white, and remained an uninterrupted fixture of the top flight from 1951 until 2017, when it was relegated for the first time in its history. The club was saved by Moravian entrepreneur Václav Brabec, who invested hundreds of millions of crowns into rebuilding the team, which reached the Czech Cup final as early as 2019. Baník's traditional rival in the local Ostrava derby remains Vítkovice, representing the Moravian side of the city, in contrast to the club's own Silesian roots.