Azadegan League

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1st Division
دسته اول
Daste Aval

Founded	1991 (as first tier) 2001 (as second tier)
Country	Iran
Confederation	AFC
Number of teams	18
Level on pyramid	2
Promotion to	Persian Gulf Pro League
Relegation to	League 2
Domestic cup(s)	Hazfi Cup
International cup(s)	AFC Champions league (through the Hazfi Cup)
Current champions	Kheybar Khorramabad (1st title) (2023–24)
Most championships	Persepolis (4 titles)
TV partners	IRIB
Website	league1football.ir
Current: 2023–24 Azadegan League

The Azadegan League (Persian: ليگ آزادگان, Lig-e Âzâdegân), also known as League 1 (Persian: لیگ یک, Lig-e Yek), is the second highest division of professional football in Iran. It was the top-level football league in Iran from its foundation in 1991 until 2001, when the Persian Gulf Pro League was established.

Azadegan League operates on a system of promotion and relegation. Each year, the top finishing teams in the Azadegan League are promoted to the Persian Gulf Pro League, and the lowest finishing teams are relegated to League 2.

Since 2016, the league comprises 18 teams. The winner and the runner-up of the Azadegan League are automatically promoted to the Persian Gulf Pro League. The bottom three teams in the league are relegated to League 2. In the past, the format and number of teams were changed for various times.