Zawisza

The team was founded in 1946, as a military-sponsored club in Koszalin, although they only played friendly matches initially. When the army headquarters moved to Bydgoszcz a year later in 1947, the club followed.

The football team has achieved some successes, playing for several years in the Polish top-flight, first winning promotion in 1961. Zawisza's under-19 team won the national youth championship in 1981.

They reached the semi-finals of the Polish Cup in 1991 and competed in the 1993 Intertoto Cup.

Zawisza was relegated from the second level to the fourth in the 1997–98 season. In 2001, they controversially merged with Chemik Bydgoszcz, and played as Chemik-Zawisza, whilst the reserve team was initially meant to be called Zawisza-Chemik, although ultimately the reserve team remained as simply "Zawisza". The merger turned out to be very unsuccessful, and the senior side started anew from the bottom of the league pyramid, reverting to "Chemik" and leaving the reserve team in the fifth division, which subsequently became Zawisza's senior team.

Aside from the ongoing Hydrobudowa scandal between 2006 and 2008, the original team were promoted to the second tier after finishing first in their regional group of the III liga in the 2007–08 season. On 12 June 2011, after a 13-year absence, Zawisza was promoted to the I liga after finishing second 5 points behind Olimpia Grudziądz in the II liga West Group in the 2010–11 season. In 2013, Zawisza won the I liga and were promoted to the Ekstraklasa.

They won the Polish Cup in the 2013–14 season, 6–5 on penalties after a goalless 120 minutes against Zagłębie Lubin, and qualified for the UEFA Europa League second qualifying round.

After the club had finished 5th in 2015–16 I liga, it did not receive a license for the following season due to financial problems and dissolved. The refounded club SP Zawisza started the 2016–17 season in Klasa B, grupa Bydgoszcz III which is in the 8th tier of Polish football.

Hydrobudowa

Zawisza Bydgoszcz SA was a club that was created when Kujawiak Włocławek were moved to Bydgoszcz and renamed by Hydrobudowa, their owners. The original Zawisza Bydgoszcz continued playing in the fourth division. however the new club had a very similar logo and an identical name. As a result, Kujawiak, Zawisza and supporters all over the country boycotted the relocated team. The reserve team continued to play under the name Kujawiak Włocławek in the Fourth Polish league.

The club lasted two seasons in the second division, before it folded in 2007 as a result of serious corruption allegations and widespread condemnation.