| Season | 2012–13 | 
|---|---|
| Champions | Al-Karkh (1st title) | 
| Promoted | Al-Karkh Naft Maysan | 
| Matches played | 85 | 
| Goals scored | 168 (1.98 per match) | 
| Biggest home win | Naft Maysan 4-0 Salahaddin | 
| Biggest away win | Al-Adala 1-5 Naft Maysan | 
| Highest scoring | Al-Karkh 5-2 Salahaddin | 
| ← 2011–12  2013–14 →  | |
The 2012–13 Iraq Division One season began on December 8, 2012. Sulaymaniya were the champions of the previous season and Naft Al-Junoob were runners-up, hence both promoted to the 2012–13 Iraqi Premier League.
Format and teams

The 42 teams were split into six groups. At the end of the regular season, the top 2 teams from each group, a total of 12 teams advanced to the next round. In the second round, these 12 teams will be split into two groups of 6, with teams playing a home and away round robin matches with each opponent in the group. The top two teams in each of the two groups advanced to the next round creating a 4 team playoff. The Final stage is one group with teams playing a home and away round robin matches with each opponent in the group. The top two teams qualify to the 2013–14 Iraqi Premier League next season.
| Governorate | Teams | Name of Teams | 
|---|---|---|
| Center | ||
| Baghdad | 4 | Al-Adala, Al-Hudood, Al-Jaish, and Al-Karkh | 
| Salahaddin | 4 | Salahaddin, Samaraa, Al-Shirqat, and Al-Tuz | 
| Middle Euphrates | ||
| Muthana | 1 | Al-Samawa | 
| Najaf | 2 | Al-Kufa and Naft Al-Wasat | 
| South | ||
| Maysan | 1 | Naft Maysan | 
Groups stage
Group 1
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification | 
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Naft Maysan (A) | 9 | 6 | 2 | 1 | 25 | 11 | +14 | 20 | Qualification for Iraq Division 1 Final Stage | 
| 2 | Al-Tuz (A) | 9 | 6 | 1 | 2 | 14 | 11 | +3 | 19 | |
| 3 | Samaraa | 8 | 3 | 3 | 2 | 9 | 9 | 0 | 12 | |
| 4 | Al-Hudood | 8 | 2 | 4 | 2 | 6 | 6 | 0 | 10 | |
| 5 | Al-Kufa | 8 | 1 | 3 | 4 | 10 | 14 | −4 | 6 | |
| 6 | Al-Adala | 8 | 0 | 1 | 7 | 4 | 17 | −13 | 1 | 
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored.
(A) Advance to a further round
Group 2
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification | 
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Al-Karkh (A) | 10 | 5 | 4 | 1 | 14 | 8 | +6 | 19 | Qualification for Iraq Division 1 Final Stage | 
| 2 | Salahaddin (A) | 10 | 5 | 4 | 1 | 8 | 2 | +6 | 19 | |
| 3 | Al-Shirqat | 10 | 4 | 4 | 2 | 17 | 10 | +7 | 16 | |
| 4 | Naft Al-Wasat | 9 | 1 | 5 | 3 | 9 | 14 | −5 | 8 | |
| 5 | Al-Jaish | 9 | 1 | 5 | 3 | 10 | 11 | −1 | 8 | |
| 6 | Al-Samawa | 8 | 0 | 2 | 6 | 3 | 16 | −13 | 2 | 
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored.
(A) Advance to a further round
Final stage
The Final stage is one group with teams playing a home and away round robin matches with each opponent in the group. The top two teams qualify to the 2013–14 Iraqi Premier League next season.
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Promotion | 
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Al-Karkh (C, P) | 6 | 4 | 2 | 0 | 16 | 7 | +9 | 14 | Promotion to the Iraqi Premier League | 
| 2 | Naft Maysan (P) | 6 | 2 | 2 | 2 | 11 | 7 | +4 | 8 | |
| 3 | Salahaddin | 6 | 1 | 3 | 2 | 6 | 12 | −6 | 6 | |
| 4 | Al-Tuz | 6 | 1 | 1 | 4 | 6 | 13 | −7 | 4 | 
Rules for classification: 1) points; 2) goal difference; 3) number of goals scored.
(C) Champions; (P) Promoted
