Tarnovia Tarnów is a Polish sports club, founded in 1909 in the southern city of Tarnów. With white and red hues, the club's founders wanted to emphasize their patriotism, during the time when their homeland was divided into three powers. Tarnovia was based on two smaller teams, which had been created by students of local high schools in 1906 and 1908. These organizations, called Bialo-Czerwoni and Pogon, merged in 1909, creating Tarnovia. In the interbellum period its soccer team played in Kraków's A-Class.

In the Second Polish Republic, there was not a national, Second Division, as we know it today, although the creation of the second division was proposed on several occasions. On Sunday, 26 September 1937 in Częstochowa, a conference of regional teams from across the nation took place, to discuss the creation of the league. Officials of several clubs arrived, such as Brygada Częstochowa, Gryf Toruń, Śmigły Wilno, Rewera Stanisławów, Dąb Katowice, Unia Sosnowiec, Strzelec Janowa Dolina, and WKS Grodno. Also, invited were officials of HCP Poznań, Podgorze Kraków, Naprzód Lipiny and Union Touring Łódź, but for unknown reasons they did not show up. The officials talked about creation of a National B-League, but nothing came out of this project. Instead, in the years 1921-1939, several Voivodeships held their own games and those leagues were known as A-Classes. In 1927, the elite Polish Football League was created, which by the late 1930s consisted of 10 teams. The teams that did not make it to the Ekstraklasa, played in the A-Classes.