First Men's Regional League (Serbian Cyrillic: Прва мушка регионална лига, romanized: Prva muška regionalna liga), previously First Serbian League, is the men's regional basketball league 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.
Division champions of the First Regional League: [10][11] [14] [20][21] The following is the list of clubs for the 2022–23 season.