2015–16 Iran Football's 2nd Division is the 15th under 2nd Division since its establishment (current format) in 2001. The season featured 25 teams from the 2nd Division 2014–15, seven new teams relegated from the 2014–15 Azadegan League: Tarbiat Novin, Naft Gachsaran, Niroo Zamini, Etka Gorgan, Sh. Bandar Abbas, Rahian Kermanshah, Esteghlal Ahvaz and four new teams promoted from the 3rd Division 2014–15: Moghavemat Tehran, Kara Shiraz, Shahrdari Mahshahr, .