2017–18 A-1 League
| HT Premijer liga | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Season | 2017–18 | |||||||||
| Duration | October 6, 2017–April 26, 2018 (Regular season) May 2, 2018–June 3, 2018 (Playoffs) | |||||||||
| Teams | 13 | |||||||||
| TV partner(s) | HRT Arena Sport | |||||||||
| Regular season | ||||||||||
| Top seed | Cedevita | |||||||||
| Promoted | Bosco Gorica | |||||||||
| Relegated | Zagreb Ribola Kaštela Jazine Arbanasi | |||||||||
| Finals | ||||||||||
| Champions | Cedevita (5th title) | |||||||||
| Runners-up | Cibona | |||||||||
| Semifinalists | Split Zadar | |||||||||
| Statistical leaders | ||||||||||
| ||||||||||
← 2016–17 2018–19 → | ||||||||||
The 2017–18 HT Premijer liga was the 27th season of the HT Premijer liga, the highest professional basketball league in Croatia. It started on 6 October 2017 and finished on 3 June 2018.
Cedevita retained the title and achieved their fifth league overall.