| Competition: | I liga |
| Season: | 2015–16 |
| Winners: | Arka Gdynia |
| Promoted: | Arka Gdynia Wisła Płock |
| Relegated: | Zawisza Bydgoszcz Rozwój Katowice GKS Bełchatów |
| Matches: | 291 |
| Total Goals: | 735 |
| League Topscorer: | Szymon Lewicki (16 goals) |
| Biggest Home Win: | Dolcan 6–1 Pogoń Płock 5–0 Zawisza |
| Biggest Away Win: | Chojnice 1–6 Bytovia |
| Highest Scoring: | Chojnice 1–6 Bytovia Dolcan 6–1 Pogoń Zawisza 6–1 Zagłębie Dolcan 3–4 Miedź |
| Highest Attendance: | 11,503[1] Arka 1–1 Chrobry (5 June 2016) |
| Lowest Attendance: | 0[2] [3] Katowice 2–2 Stomil Katowice 2–0 Dolcan Katowice 1–0 Zawisza Chrobry 0–1 Arka Chrobry 1–1 Sandecja Zawisza 0–3 Katowice |
| Attendance: | 494,077[4] |
| Average Attendance: | 1,697 2.0%[5] |
| Prevseason: | 2014–15 |
| Nextseason: | 2016–17 |
The 2015–16 I liga is the 8th season of the Polish I liga under its current title, and the 68th season of the second highest division in the Polish football league system since its establishment in 1949. The league is operated by the Polish Football Association (PZPN). The league is contested by 18 teams. The regular season was played in a round-robin tournament. The season began on 1 August 2015, and concluded on 6 June 2016. After the 19th matchday the league will be on winter break between 6 December 2015 and 3 March 2016.[3]
According to the competition rules, all clubs are required to field at least one youth player (born on 1995 or later and Polish or trained in Poland) in every game (except for the times when the only youth player on the roster is sent off or unable to continue playing).[6]
The following teams have changed division since the 2014–15 season.
Promoted from II liga
Relegated from Ekstraklasa
Relegated to II liga
Promoted to Ekstraklasa
| Team | Stadium | Capacity | |
|---|---|---|---|
| 15,139 | |||
| Stadion MOSiR | 1,500 | ||
| Stadion Miejski Chojniczanka 1930 | 3,000 | ||
| Stadion GOS | 2,817 | ||
| Dolcan Arena | 2,100 | ||
| 5,238 | |||
| 6,710 | |||
| Stadion Orła Białego | 6,244 | ||
| Stadion Miejski | 2,776 | ||
| 5,000 | |||
| Stadion ROSRRiT | 2,901 | ||
| 6,710 | |||
| Stadion im. Ojca Władysława Augustynka | 2,850 | ||
| 3,500 | |||
| Stadion OSiR | 3,060 | ||
| 10,978 | |||
| 7,500 | |||
| 20,247 |
The 15th place team from the regular season will compete in a play-off with the 4th place team from II liga. Matches will be played 11 and 19 June 2016. The winner will compete in the I liga. Host of first match was decided on 6 June 2016.[7]
On 9 June 2016 Zawisza Bydgoszcz did not receive a license for the 2016–17 season, thus relegation play-off between the 15th-placed team of I liga (MKS Kluczbork) and the 4th-placed team of II liga (Wisła Puławy) was not held and both will play in the 2016–17 I liga.
| Rank | Player | Club | Goals[8] | |
|---|---|---|---|---|
| 1 |  Szymon Lewicki | Zawisza Bydgoszcz | 16 | |
| 2 | Arkadiusz Aleksander | Sandecja Nowy Sącz | 15 | |
| Maciej Górski | Chrobry Głogów | 15 | ||
| 4 | Janusz Surdykowski | Bytovia Bytów | 14 | |
| 5 | Kamil Drygas | Zawisza Bydgoszcz | 13 | |
| Mikołaj Lebedyński | Wisła Płock | 13 | ||
| 7 | Paweł Abbott | Arka Gdynia | 12 | |
| Michał Fidziukiewicz | Zagłębie Sosnowiec | 12 | ||
| Grzegorz Goncerz | GKS Katowice | 12 | ||
| Arkadiusz Reca | Wisła Płock | 12 | ||
| 11 | Kamil Adamek | Wigry Suwałki | 11 |