J. League Cup is a Japanese football (soccer) competition organized by J. League. It is also known as Yamazaki Nabisco Cup or Nabisco Cup because confectionery/bakery company Yamazaki Nabisco (the Japanese Nabisco licensee) have sponsored the competition since its inception in 1992.

It is generally regarded as the Japanese equivalent to league cup competitions played in many countries such as the Football League Cup in England. Before the J. League Cup was created, the old Japan Soccer League had its own Japan Soccer League Cup since the 1976 season.

The tournament format varies almost each year (see the "Format" section below). The 18 J. League Division 1 sides participated in the 2007 competition that was won by Gamba Osaka.