The Aiful Cup was a professional golf tournament held in Japan from 1998 to 2006.

The final event in 2006 was titled The Golf Tournament in Omaezaki with a purse of ¥120,000,000, with ¥24,000,000 going to the winner.

The tournament was originally planned to be held as the "Aiful Cup Golf Tournament" under the special sponsorship of Aiful, a major consumer finance company.

However, Aiful's violations of the Money Lending Business Control and Regulation Law, including aggressive sales activities, severe collections, and illegal interest rates, were discovered and became a social problem.

[1] However, the tournament was abandoned after 2007 due to "various circumstances surrounding the consumer finance industry" (for the same reason, the "ACOM International" and the "LPGA Takefuji Classic" were also abandoned).