2012 K-League

The 2012 K League, officially known as Hyundai Oilbank K-League 2012, was the 30th season of the K League. It was sponsored by Hyundai Oilbank. Since this season, the K League Championship and the Korean League Cup were abolished, and K League introduced the "split system", inspired by Scottish Premier League. After all 16 clubs played 30 matches each under the home and away system, they were split into the group of top eight and the group of bottom eight, playing with each other in a group again.

Foreign players
Restricting the number of foreign players strictly to four per team, including a slot for a player from AFC countries. A team could use four foreign players on the field each game including a least one player from the AFC country.

Main awards
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Best XI
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Attendance
Due to the match-fixing scandal that involved 40 current and former players in the previous year, there was a massive decline in attendance the following season. The scandal continued to have an effect on the league's attendance for several seasons thereafter.