| First Men's Regional League | |
| Country: | Serbia |
| Confed: | FIBA Europe |
| First: | 2006–07 |
| Divisions: | 4 |
| Teams: | 56 |
| Promotion: | Second Men's League |
| Relegation: | Second Men's Regional League |
| Pyramid: | Serbian basketball league system |
| Levels: | 3rd |
| Domest Cup: | Cup of Serbia |
| Website: | kss.rs |
First Men's Regional League (Serbian: Прва мушка регионална лига|Prva muška regionalna liga), previously First Serbian League, is the men's regional basketball league in Serbia. It is the 3rd-tier of the basketball league system in Serbia. Founded in 2006, it is run by the Basketball Federation of Serbia (KSS).
The league, operated by the Basketball Federation of Serbia and regional basketball associations, consists of four divisions, North, Central, East and West, which have 14 teams each. The first team in every division will be promoted to the Second Basketball League of Serbia. The teams positioned 13th and 14th in the First Regional League will be relegated to a lower-tier league - the Second Regional League.
| Division | Teams | Regional Basketball Association | |
|---|---|---|---|
| North | 12 | BA Vojvodina | |
| Central | 12 | BA Belgrade | |
| East | 12 | RBA East Serbia RBA South Serbia | |
| West | 14 | RBA West Serbia RBA Central Serbia RBA Raška–Kosovo |
Division champions of the First Regional League:
The following is the list of clubs for the 2022–23 season.[22]
The North division is composed of 16 clubs.
| width=150 | Team ! | width=150 | City |
|---|---|---|---|
| Akademik | Srbobran | ||
| Dunav 2014 | Apatin | ||
| Hajduk Kula | Kula | ||
| Novi Sad | |||
| Jedinstvo | Novi Bečej | ||
| Nova Pazova | Nova Pazova | ||
| Podrinje | Mačvanska Mitrovica | ||
| Zrenjanin | |||
| Radnički Kovin | Kovin | ||
| Sloven | Ruma | ||
| Sremska Mitrovica | |||
| Stara Pazova | Stara Pazova | ||
| Žitište | |||
| Topola | Bačka Topola | ||
| Vrbas | |||
| Inđija |
The Center division is composed of 14 clubs.
| width=150 | Team ! | width=150 | City |
|---|---|---|---|
| Barajevo | Belgrade | ||
| Beba Basket | |||
| Borac 2015 | Lazarevac | ||
| Flash | Belgrade | ||
| IBC | |||
| Mladenovac | Mladenovac | ||
| Belgrade | |||
| Radnički Obrenovac | Obrenovac | ||
| Rivers BM | Belgrade | ||
| Torlak | |||
| Zemun | |||
| Zemun | |||
| Belgrade |
The East division is composed of 16 teams.
| width=150 | Team ! | width=150 | City |
|---|---|---|---|
| Bin | Zaječar | ||
| Bor | |||
| Dimitrovgrad | Dimitrovgrad | ||
| Jablanica | Medveđa | ||
| Knjaževac | |||
| Niš | |||
| OKK Junior | |||
| Marinos | |||
| Mladost Vesna | Bela Palanka | ||
| Niš | Niš | ||
| Panteri | Vranje | ||
| Radan | Lebane | ||
| Ratnici | Niš | ||
| Boljevac | |||
| Topličanin | Prokuplje | ||
| Vlasotince | Vlasotince |
The West division is composed of 16 teams.
| width=150 | Team ! | width=150 | City |
|---|---|---|---|
| Ćuprija | Ćuprija | ||
| Ivanjica | Ivanjica | ||
| Jagodina | |||
| Loznica | |||
| Mileševac | Prijepolje | ||
| M015 | Šabac | ||
| Kruševac | |||
| Paraćin | Paraćin | ||
| Plana | Velika Plana | ||
| Požarevac | Požarevac | ||
| Sloga Elite | Kraljevo | ||
| Student | Bajina Bašta | ||
| Svilajnac | Svilajnac | ||
| Užice | Užice | ||
| Zekas 75 | Rača | ||
| Zlatar | Nova Varoš |