The 2006 K League Championship was the tenth competition of the K League Championship, and was held to decide the 24th champions of the K League.
After the regular season was finished, the first stage winners, the second stage winners, and the top two clubs in the overall table qualified for the championship.
Each semi-final was played as a single match, and the final consisted of two matches.
Assistant referees: Kim Dae-young (South Korea) Won Chang-ho (South Korea) Fourth official: Kwon Jong-chul (South Korea) Assistant referees: Ahn Sang-ki (South Korea) Kang Chang-koo (South Korea) Fourth official: Lee Jong-gook (South Korea) Assistant referees: Kim Kye-soo (South Korea) Kim Jung-sik (South Korea) Fourth official: Yoo Byung-sub (South Korea) Assistant referees: Won Chang-ho (South Korea) Kang Chang-koo (South Korea) Fourth official: Lee Jong-gook (South Korea) Seongnam Ilhwa Chunma won 3–1 on aggregate.