Radnicki Nis

The club was founded on April 24, 1923, in the Kingdom of Serbs, Croats and Slovenes. One of its founders was the communist activist Miloš Marković (who also founded Sloboda Užice in 1925). In the same year, the club played its first unofficial matches. Two years later, in the 1925–26 season, the club became part of the professional league of the Morava Banovina, and won the championship on two occasions, in the 1924–25 and 1927–28 seasons. Following the proclamation of the royal dictatorship in 1929, the government began to persecute leftist activists, and Radnički changed its name to Građanski. As Građanski Niš, the club played in the 1935–36 Yugoslav Football Championship which was played in a straight-knockout competition format, and was eliminated in the round of sixteen by Građanski Skoplje. At the end of that season the club reinstated its original name, and played until 1941, when, because of the war, the club ceased its activities and its members and players joined the resistance.

At the beginning of World War II in the Kingdom of Yugoslavia in 1941, the club terminated the activities, which were renewed in 1945, one year after the liberation from the occupation of Nazi Germany.

In 1962, Radnički Niš were promoted to the Yugoslav First League for the first time in the club's history. On 23 September 1962, Radnički fans displayed their first big choreography on the first league match against Red Star Belgrade. A large banner reading "Real sa Nišave", which translates to "Real from Nisava" was raised on the east stand, and the club bears this nickname to this day. The banner could be seen at every home game throughout the 1960s. In following years, the club underwent major development and became one of the most stable football clubs in the country. In 1963, the club founded its youth school, through which many of the Radnički players passed. In 1975, Radnički beat Turkish club Eskişehirspor (1–0, 2–1) and won its first trophy of European importance, the Balkans Cup.

In 1980, Radnički finished the national championship in 3rd place, the best placement thus far, and played for the first time in the UEFA Cup in the following season, during which Radnički reached the round of sixteen, but lost against Dutch club AZ Alkmaar. In 1981, the club was again third and qualified for the 1981–82 UEFA Cup season. In the first round, Radnički Niš were drawn against Napoli. In the first leg, the club from South Serbia achieved a 2–2 draw in front of 70.000 spectators at Stadio San Paolo, which was enough for Radnički to progress after a goalless match in Serbia because of the away goals rule. After eliminating the Azzurri, Radnički played the second round against Grasshopper Club Zürich. The Swiss club won the first match in Zürich by 2–0, but Radnički had equalized with a 2–0 and won convincingly 3–0 in the penalty shoot-out. In the third round, the club played against Feyenoord from Rotterdam. In the first leg in Niš, the result was 2–0 for Radnički and at De Kuip the result was 1–0 for the Dutch club. However, it was a 2–1 victory on aggregate for the Serbian club and in the quarter-finals Radnički were drawn against Dundee United from Scotland. In the first leg, played in Dundee, Radnički suffered a 2–0 defeat. Although they were not seen as the favourites in the return leg, the Real from Nišava pulled off a convincing 3–0 win in front of its spectators, and with an aggregate score of 3–2 they eventually achieved their greatest success by reaching the semi-finals of this prestigious tournament.

The semi-finals provided a football holiday at Čair Stadium, due to the fact that German top club Hamburger SV, led by stars like Horst Hrubesch, Felix Magath, Lars Bastrup, Manfred Kaltz, Thomas von Heesen and Uli Stein would play in Niš. In the first leg, Radnički Niš won against the favored North Germans in front of 38,500 enthusiastic Radnički fans with 2–1, but they lost the second leg in Hamburg by 5–1 (Hamburg lost at the end the final, but won next year the 1982–83 European Cup). After one year of absence from international football, the club qualified for the 1983–84 UEFA Cup season (finished the 1979–80 Yugoslav First League season in 4th place) and reached the round of sixteen, as in 1981. After winning matches against St Gallen (3–0, 2–1) and FK Inter Bratislava (4–0, 2–3), Radnički played against Hajduk Split. It was the first intra-Yugoslav fixture in UEFA cup. Hajduk won both matches 2–0 and progressed to the quarter-finals.

Radnički Niš played a total of 22 matches across Europe between 1981 and 1984. During this time, Radnički lost only one UEFA Cup home match of a total of 11 across three seasons and only against a team from the domestic league. A major contribution was made by the fans and their enthusiastic support. The Čair Stadium was a tough ground for the opposition and the atmosphere created by Radnički fans in a roaring stadium always gave hope to the team that they could overcome anybody.

After the golden years, Radnički Niš was unexpectedly relegated to in the Yugoslav Second League in 1985, after 23 continuous years in the first league. However, under coach Josip Duvančić, Radnički won the Yugoslav Second League in the following season and returned to the first league after only a year of absence. In 1989, the club played its second Balkans Cup final after 1975, but they lost against OFI Crete of Greece by 3–1. At the beginning of the 1990s, the entire country was plunged into a crisis. The disintegration of Yugoslavia, the civil war (1992–95), the inflation and the UN sanctions hit all the Yugoslav football teams hard, and also Radnički was no exception. In the 2000–01 season, the club dropped out of the first division for the second time in its history. In the following season, Radnički Niš won the second division championship and quickly returned to the major clubs, but they ended the 2002–03 season in last place. After that, the club competed in the second league for the following five seasons.

In the 2008–09 season, Radnički was even relegated to Serbia's third division. They won the division, but they ended the 2009–10 Serbian First League season in the relegation zone. In the 2010–11 season, they won the Serbian League East and were promoted to the Serbian First League, Serbia's second division. What followed was a consecutive promotion. The club won the 2011–12 Serbian First League and was promoted to the Serbian SuperLiga, Serbia's highest football tier. In the same season, the club's home ground was rebuilt, which rekindled the fans' hopes further. Since then club become stable in Serbian SuperLiga gradually improving its position on the league table and establish itself as a major club in Serbian football once again. First season in highest division Radnički Niš finished in 12th place but kept improving every following season, finishing 6th, 9th and twice in 5th place. In season 2017–18 Serbian SuperLiga Radnički Niš finished in third place, which guaranteed them place in first qualifying round of UEFA Europa League. The following season marked the club's return to European competitions where they eliminated Maltese club Gzira United 5–0 on aggregate in the first qualifying round for the 2018–19 UEFA Europa League. Radnički was later eliminated in the second round by the favoured Israeli team Maccabi Tel Aviv 4–2 on aggregate. In the SuperLiga, Radnički finished the season in second place behind defending champions Red Star Belgrade, once again reaching the qualifying rounds for the UEFA Europa League.