Fudbalski klub Radnički, commonly known as Radnički Niš, is a professional football club based in Niš, Serbia. Its name means Labourers in Serbian and stems from the relationship with the Labour movement which the club had during the first half of the 20th century.
Radnički Niš was one of the most stable clubs in the former Yugoslavia. The team spent a total of 29 seasons in the Yugoslav First League, achieved two 3rd-place finishes in 1980 and 1981, and one 3rd-place finish in 2018. In international competition, Radnički Niš won the 1975 Balkans Cup, reached the final in 1989, and played against Hamburger SV in the semi-finals of the UEFA Cup in 1982.