| Competition: | Azadegan League |
| Season: | 2015–16 |
| Winners: | Paykan 2nd Azadegan League title |
| Promoted: | Paykan Machine Sazi Sanat Naft |
| Relegated: | PAS Hamedan Shahrdari Ardabil Sanaye Giti Pasand Damash Aluminium Hormozgan |
| League Topscorer: | Hamid Kazemi (16 goals) |
| Matches: | 380 |
| Total Goals: | 796 |
| Biggest Home Win: | Parseh 5–0 Pas Hamedan (14 February 2016) Sanat Naft 5–0 Sh. Ardabil (3 May 2016) |
| Biggest Away Win: | Iranjavan 0–3 Kheybar (30 November 2015) |
| Highest Scoring: | Foolad Yazd 3–5 Parseh (14 January 2016) |
| Longest Wins: | 6 matches Fajr Shiraz |
| Longest Unbeaten: | 13 matches Paykan Naft MIS |
| Longest Winless: | 18 matches Aluminium Hormozgan |
| Longest Losses: | 9 matches Aluminium Hormozgan |
| Highest Attendance: | 15,500 Machine Sazi – Mes Rafsanjan (10 May 2016) |
| Lowest Attendance: | 0 (spectator ban) Naft MIS – Paykan (4 September 2015) Naft MIS – Mes Kerman (16 September 2015) Kheybar – Aluminium Arak (28 September 2015) Kheybar – Khooneh be Khooneh (12 October 2015) Nassaji – Damash (29 February 2016) Nassaji – Parseh Tehran (11 April 2016) |
| Attendance: | 761,770 |
| Average Attendance: | 2,539 |
| Prevseason: | 2014–15 |
| Nextseason: | 2016–17 |
The 2015–16 Azadegan League was the 25th season of the Azadegan League and 15th as the second highest division since its establishment in 1991. The season featured 15 teams from the 2014–15 Azadegan League, two new teams relegated from the 2014–15 Persian Gulf Pro League (Paykan and Naft Masjed Soleyman) and two new teams promoted from the 2014–15 League 2 (Aluminium Arak as champions and Kheybar Khorramabad). Khooneh be Khooneh replaced Bahman Shiraz while Machine Sazi replaced Shahrdari Tabriz. The league started on 17 August 2015 and ended on 16 May 2016. Paykan won the Azadegan League title for the second time in their history. Paykan, Machine Sazi and Sanat Naft were promoted to the Persian Gulf Pro League.
| Team | City | Venue | Capacity |
|---|---|---|---|
| 15,000 | |||
| 20,000 | |||
| 11,000 | |||
| 15,000 | |||
| Shahid Nassiri | 6,000 | ||
| Daneshgah Azad | 9,000 | ||
| 3,200 | |||
| 15,000 | |||
| 10,000 | |||
| 6,000 | |||
| 20,000 | |||
| Shahid Bahonar | 15,430 | ||
| Shohadaye Noushabad | 5,000 | ||
| Behnam Mohammadi | 8,000 | ||
| 15,000 | |||
| 5,000 | |||
| Qods | 8,000 | ||
| Shahre Qods | 25,000 | ||
| Takhti Abadan | 22,000 | ||
| Ali Daei Takhti Ardabil | 20,000 3,000 | ||
| Rank | Home team | Score | Away team | Attendance | Date | Week | Stadium | |||
|---|---|---|---|---|---|---|---|---|---|---|
| align=center | 1 | Machine Sazi | align=center | 3–0 | Mes Rafsanjan | align=center | 15,500 | 37 | Sahand | |
| align=center rowspan="2" | 2 | Nassaji | align=center | 1–1 | Machine Sazi | align=center | 15,000 | 15 | Vatani | |
| Sanat Naft | align=center | 2–1 | Fajr Sepasi | align=center | 15,000 | 38 | Takhti Abadan | |||
| align=center | 4 | Nassaji | align=center | 1–0 | Khooneh be Khooneh | align=center | 14,500 | 4 | Vatani | |
| align=center | 5 | Nassaji | align=center | 1–4 | Sanat Naft | align=center | 12,100 | 22 | Vatani | |
| align=center | 6 | Nassaji | align=center | 0–2 | Fajr Sepasi | align=center | 12,000 | 10 | Vatani | |
| align=center rowspan="4" | 7 | Nassaji | align=center | 1–1 | PAS Hamedan | align=center | 10,000 | 6 | Vatani | |
| Kheybar Khorramabad | align=center | 1–2 | Fajr Sepasi | align=center | 10,000 | 16 | Takhti Khorramabad | |||
| Nassaji | align=center | 1–0 | Mes Kerman | align=center | 10,000 | 26 | Vatani | |||
| Machine Sazi | align=center | 1–0 | Nassaji | align=center | 10,000 | 34 | Bagh Shomal | |||