First Men's Basketball League
| Founded | 2017 |
|---|---|
| First season | 2017–18 |
| Country | Croatia |
| Confederation | FIBA Europe |
| Level on pyramid | 2nd |
| Promotion to | Premijer liga |
| Website | hks-cbf.hr |
First Men's League (Croatian: Prva muška liga) is a second-tier professional men's basketball league in Croatia. The league was founded in 2017 replacing the former A2 Basketball League.
League champions are automatically promoted to Premijer Liga, while runners-up enter a promotion playoff against the next-to-last placed team from Premijer Liga.