fans backing Lechia in the derby. These are generally fans from; Chojniczanka Chojnice, Bytovia Bytów, Cartusia Kartuzy, Czarni Pruszcz Gdański, KP Starogard Gdański, Unia Tczew, Pomezania Malbork, Rodło Kwidzyn and Olimpia Sztum. Other teams' fans who have friendly relations with Lechia include; Jeziorak Iława, Miedź Legnica, Hutnik Kraków, Mławianka Mława and Czech team SFC Opava. Despite being a basketball team, Czarni Słupsk fans are also closely linked with Lechia fans. While not a friendship, Lechia fans have had an “agreement” () with Stomil Olsztyn since 2016. Typically if agreements last the two teams become friends and develop a “friendship” (). Lechia fans supposedly also have an agreement with Raków Częstochowa, and friendly relations with Górnik Łęczna. Former friendships From 1983 until 1988 Lechia was part of a fan coalition which consisted of Widzew Łódź, Wisła Kraków, Jagiellonia Białystok, and Ruch Chorzów, being the biggest coalition in Poland at the time. The coalition broke up when Lechia fans wanted Śląsk Wrocław to join the coalition, but opposition from Widzew, Jagiellonia and Ruch prevented the coalition from growing. As a result, the coalition split with Lechia and Wisła fans siding with Śląsk. Lechia fans had an agreement with Wisła Kraków dating back to 1973, and from 1988 until 2016 both sets of fans were involved in a fan coalition with Śląsk Wrocław. Wisła left the "Three Kings of Great Cities" () coalition to join a new coalition of Widzew Łódź and Ruch Chorzów. This upset both Lechia and Śląsk fans as fans of Ruch Chorzów and Widzew Łódź were involved in the murder of a Śląsk fan in 2003. The main Lechia Gdańsk fan group posted that the decision for Wisła to form a friendship with Ruch was unacceptable for the fans of Lechia, and that the friendship was to be terminated. The main Śląsk Wrocław fan group posted a similar response the following day officially ending the TKWM alliance. While not technically a former friendship it was also documented that Lechia fans had agreements with both Piast Gliwice and Wisła Płock since at least 2017 until around 2020. While this agreement didn't progress into a friendship between fans, it is unlikely that there will be negative thoughts between each team's fans, as with the case of Wisła Kraków, and have a more neutral opinion of each other. Rivals Their biggest rivals are Arka Gdynia, the games between the two are known