| A-1 League | |
| Season: | 2015–16 |
| Champions: | Cedevita |
| Runners Up: | Cibona |
| Semifinalists: | Kvarner Zadar |
| Promoted: | Hermes Analitica |
| Relegated: | Ribola Kaštela |
| Teams: | 11 + 3 |
| Duration: | October 3, 2015 – June 3, 2016 |
| Tv: | HRT |
| Top Seed: | Cedevita |
| Top Scorer: | James Florence (Cibona) |
| Ppg: | 18.7 |
| Ppg N: | USA |
| Rebounds Leader: | Kristijan Krajina (Šibenik) |
| Rpg: | 10.4 |
| Rpg N: | HRV |
| Assists Leader: | Teo Petani (Šibenik) |
| Apg: | 7.0 |
| Apg N: | HRV |
| Updated: | 26 March 2016 |
| Prevseason: | 2014–15 |
| Nextseason: | 2016–17 |
The 2015–16 A-1 League (Croatian: A-1 liga 2015./16.) was the 25th season of the A-1 League, the highest professional basketball league in Croatia.
The first half of the season consists of 11 teams and 110-game regular season. For second half of the season clubs will be divided into two groups. Championship group will consist of 3 teams from ABA League and the best 5 teams from first half of the season. Relegation group will consist of bottom 6 teams from first half of the season.
| Teams | Team | City | Venue (Capacity) | |
|---|---|---|---|---|
| Regular season teams | align=center rowspan=12 | 11 | ||
| Športska dvorana Sinj (1,500) | ||||
| Gradska sportska dvorana Velika Gorica (300) | ||||
| Sportska dvorana Baldekin (1,500) | ||||
| Dvorana Dinko Lukarić (1,100) | ||||
| Školska sportska dvorana Kaštel Sućurac (1,600) | ||||
| Arena Gripe (6,000) | ||||
| Dvorana Mavrinci (720) | ||||
| Sportska dvorana Baldekin (1,500) | ||||
| Gradski vrt Hall (1,448) | ||||
| Športska dvorana Bedekovčina (2,500) | ||||
| Športska dvorana Trnsko (2,500) | ||||
| Teams already qualified for Championship Round | align=center rowspan=4 | 3 | ||
| Dom Sportova (3,100) | ||||
| Dražen Petrović Basketball Hall (5,400) | ||||
| Krešimir Ćosić Hall (8,500) | ||||
Source: Scoresway.com
Teams "carried" the results of the matches played between them from the regular season.
Relegation league 5th-placed team Škrljevo faces the 2nd-placed Promotion league side Jazine in a two-legged play-off. The winner on aggregate score after both matches will earn a spot in the 2016–17 A-1 League.
Škrljevo retained its A-1 League status
The semifinals are best-of-3 series.
The semifinals are best-of-5 series.
Championship round
| Round | Player | Team | Efficiency |
|---|---|---|---|
| 1 | 35 | ||
| 2 | 55 | ||
| 3 | 35 | ||
| 4 | 29 | ||
| 5 | 39 | ||
| 6 | 32 | ||
| 7 | Ante Toni Žižić (2) | 34 | |
| 8 | 27 | ||
| 9 | Ante Toni Žižić (3) | 36 | |
| 10 | 30 | ||
| 11 | 31 | ||
| 12 |  James Florence (2) | 37 | |
| 13 | Ante Toni Žižić (4) | 52 | |
| 14 | 39 | ||
| Round | Player | Team | Efficiency |
|---|---|---|---|
| 1 | Miro Bilan (2) | 33 | |
| 2 | Petar Marić (2) | 28 | |
| 3 | 25 | ||
| 4 | 25 | ||
| 5 | 31 | ||
| 6 | Miro Bilan (3) | 27 | |