Jämsänkosken Ilves (abbreviated JIlves) is a sports club from Jämsä, Finland.

The club is active in cross-country skiing, swimming, athletics, and football, where it has a long tradition.

Other venues used by the club include the Oinaalan urheilukenttä (Oinaala sports field), Paunu and Jaatilan kenttä at Jämsä.

The year 2010 is the eightieth anniversary of the club and a number of celebratory events are being held.

JIlves/2 are participating in the Vitonen[broken anchor] section administered by the Keski-Suomi SPL.