First Regional Basketball League (Serbia)
| Country |
 Serbia
|
|---|---|
| Confederation | FIBA Europe |
| Founded | 2006 |
| First season | 2006–07 |
| Divisions | 4 |
| Number of teams | 56 |
| Level on pyramid | 3 |
| Promotion to | Second League of Serbia |
| Website | kss.rs |
First Regional League (Serbian Cyrillic: Прва регионална лига) is the regional basketball league in Serbia. It is the 3rd-tier of the basketball league system in Serbia. It was founded in 2006.
The league, operated by the Basketball Federation of Serbia, consists of four divisions, North, Central, East and West, which have 14 teams each. The first team in every division will be promoted to Second Basketball League of Serbia. The teams positioned 13th and 14th in First Regional League will be relegated to a lower-tier league - the Second Regional League.
Division champions of the First Regional League:
List of teams for 2017–18 season
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