Košarkaški klub Radnički (Serbian Cyrillic: Кошаркашки клуб Раднички), commonly referred to as Radnički Kragujevac or SPD Radnički, is a men's professional basketball club based in Kragujevac, Serbia, and a part of a multi-sports company SPD Radnički.

They are currently competing in the Basketball League of Serbia.

The club was founded in October 2015 as KKK Radnički (full name: Kragujevački košarkaški klub Radnički), and a former basketball player and Kragujevac-born Nikola Lončar became the club president.

[1] Napredak Rubin, which competed in the Basketball League of Serbia in the 2016–17 season, changed the tier with the Radnički for 2017–18 season.

By approval from the Basketball Federation of Serbia, Napredak moved to the 3rd-tier First Regional League (West).