Fortuna Sittard

The club experienced mixed fortunes throughout its history although they were a regular fixture in the Eredivisie in the 1990s, with players such as Kevin Hofland, Mark van Bommel and Fernando Ricksen emerging from its youth system. These players later joined PSV Eindhoven and Rangers, and featured for the Netherlands national team. The team also signed Wilfred Bouma and Patrick Paauwe from the youth setup of PSV. Both players developed under manager Bert van Marwijk, before breaking into the Dutch national side and moving towards bigger clubs.

Fortuna 54 won the KNVB Cup in the 1956–57 season, and finished the Eredivisie season in second place behind champions Ajax. Sittardia were less successful and battled against relegation for many seasons. Fortuna 54 won the KNVB Cup again in 1964 before the merging of the two clubs in 1968 due to financial difficulties.

At the end of the 1999–2000 season, manager Bert van Marwijk left to join Feyenoord and the team was relegated to the First Division in the 2001–02 season.

Financial difficulties (2002–16)

Financial irregularities were discovered and the team faced bankruptcy over several seasons. In the winter of 2003, two of the club's fans won the Dutch lottery and donated all of the prize money to the club. The club cleared most of their debts by selling off their new stadium, the Wagner & Partners stadium.

On 19 May 2009, the KNVB announced it would withdraw the club's license to play for the 2010–11 season. After going to civil court, this decision was revoked. Despite ongoing financial difficulties, the club gradually began to recover financially in the following years, leading to sporting success. In the 2011–12 season, Fortuna Sittard narrowly missed out on qualifying for the playoffs for promotion to Eredivisie, conceding an equaliser in the final seconds of the season at their home match against the Go Ahead Eagles, resulting in the Eagles taking the final playoff spot instead. Although they qualified for the playoffs in the 2012–13 and 2013–14 seasons, offering them their first chance to return to Eredivisie since their relegation in 2002, they were unsuccessful in both first-round matches against De Graafschap.

Takeover and Eredivisie (2016–present)

The club again faced financial troubles in 2016, leading to its takeover by a Turkish investor named Işıtan Gün, who had previously served as the chief operating officer of Galatasaray. The 2016–17 season was a tough start for the club, but they managed to avoid relegation after changing coaches and recruiting new players, including some from Galatasaray.

In December 2016, Sunday Oliseh was appointed as the new coach of Fortuna Sittard. During his time as coach, he set two new records for the club, with eight consecutive home victories and the biggest away victory in the club's history against Telstar with a score of 6–0. In January 2018, the team won a periodetitel after a 2–1 victory over Jong Ajax. However, on 14 February 2018, Oliseh was suspended due to "repeated and culpable actions towards multiple individuals within the organisation over an extended period." A statement on the club's website announced his release.

In 2018, after 16 years in the Eerste Divisie, Fortuna won promotion to the Eredivisie again after beating Jong PSV 1–0 to stay clear from NEC and finishing runner-up to champions Jong Ajax, who are not allowed to promote.

Fortuna Sittard finished in 16th place during the 2019–20 season. However, due to the season being declared void in response to the COVID-19 pandemic, they remained in the Eredivisie for the 2020–21 season.