2012–13 Iran 2nd Division season is the edition of the third tier of the Iranian football league system annual 2nd Division football conpetition for the Persian Gulf Cup.
In each division, the top two teams are promoted to Azadegan League, and the bottom two teams are relegated to Iran Football's 3rd Division plus the relegation playoff loser.
In total, the league promotes 4 teams to Azadegan League and relegates 9 teams to 3rd Division.
The league started in September 2012.
The loser will be relegated to 2013–14 Iran Football's 3rd Division.