League Cup 2004, officially the 2004 J.League Yamazaki Nabisco Cup, was the 2nd edition of Japan soccer league cup tournament and the 12th edition under the current J.

League Cup format.

The competition started on March 27, and finished on November 3, 2004.

Teams from the J1 took part in the tournament.

The group winners and runners-up of each group qualifies for the quarter final.