KK Rtanj

Košarkaški klub Rtanj (Кошаркашки клуб Ртањ), commonly referred to as KK Rtanj, is a men's basketball club based in Boljevac, Serbia. They are currently competing in the First Regional League of Serbia (3rd-tier).

The club was founded in 1980 and was named after Rtanj, a mountain situated in eastern Serbia.

Trophies

 * First Regional League (Eastern Division) (3rd-tier)
 * Winners (2): 2015–16, 2017–18

Notable players

 * 🇷🇸 Boban Marjanović (youth system)