The Munsingwear Open KSB Cup was a professional golf tournament on the Japan Golf Tour.

It was created in 2000 as a result of the merger of two previous tournaments, the Georgia KSB Open and the Descente Classic Munsingwear Cup.

From 2004, the tournament was played at the Tojigaoka Marine Hills Golf Club near Tamano, Okayama.

At the 2007 Munsingwear Open KSB Cup, Ryo Ishikawa, an amateur, became the youngest ever winner on the Japan Golf Tour, aged 15 years and 8 months.

This article on a golf tournament is a stub.