1998 K League Championship

It was contested between the top four clubs of the regular season.

The winners of the first round advanced to the semi-final, and played against runners-up of the regular season over two legs.

The final progressed in the same way as the semi-final, and winners of the regular season qualified directly.

Ulsan Hyundai Horang-i won 4–1 on penalties.

Suwon Samsung Bluewings won 1–0 on aggregate.