2017–18 A-1 League
The 2017–18 Premier League was the 27th season of the Premier League, the highest professional basketball league in Croatia. It will start on 6 October 2017.
Cedevita retained the title and achieved their fifth league overall.
Format
As in the previous season, all participants in A-1 League including teams that play ABA League joined the regular season. It was played with a double round-robin format where the eight first qualified teams joined the playoffs while the last qualified one was relegated.Current teams
After the resign of Jolly Šibenik to its berth, the league was reduced to 13 teams. Jazine and Ribola Kaštela were promoted from the previous season. They would replace Gorica and Kvarner 2010.| Team | Coach | City | Venue | Capacity |
| Alkar |  Srđan Helbich | Sinj | ŠD Sinj | |
| Cedevita |  Jure Zdovc | Zagreb | Dom Sportova | |
| Cibona | Ante Nazor | Zagreb | Dražen Petrović Basketball Hall | |
| Hermes Analitica | Zvonimir Mravak | Zagreb | ŠD Prirodoslovne škole Vladimir Prelog | |
| Jazine Arbanasi | Luka Bujas | Zadar | Jazine Basketball Hall | |
| Ribola Kaštela | Ivica Ćelan | Kaštel Sućurac | Sportska dvorana Sokolana | |
| Split | Ivica Skelin | Split | Arena Gripe | |
| Šibenik | Vladimir Anzulović | Šibenik | Dvorana Baldekin | |
| Škrljevo | Damir Rajković | Škrljevo | Dvorana Mavrinci | |
| Vrijednosnice | Vladimir Krstić | Osijek | Gradski Vrt | |
| Zabok | Ivan Perinčić | Zabok | Zabok Sports Hall | |
| Zadar | Aramis Naglić | Zadar | Dvorana Krešimir Ćosić | |
| Zagreb | Nikola Garma | Zagreb | ŠD Trnsko |
| Teams that play in the 2017–18 First Adriatic League | |
Teams that play in the 2017–18 Second Adriatic League | |
| Teams that play in the 2017-18 Alpe Adria Cup |