Hongcheon Idu Football Club (Korean: 홍천 이두 FC) is a South Korean football club that is currently a member of the National League.

The team started out life as INGNEX FC, and applied for league membership in 2006 but its application was rejected, however it was successful the second time around and was admitted to the 2007 National League.

The team initially planned to play their home games in Yeosu, but a disagreement with the Yeosu city government left them homeless for the entire season.

After failing to register in time for the 2008 season, INGNEX FC was sold to Idu Construction.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.