The Casio World Open (カシオワールドオープンゴルフトーナメント, Kashio wārudo ōpun gorufu tōnamento) is a professional golf tournament on the Japan Golf Tour. Founded in 1981, it is played in November and is one of the richest tournaments in Japan, attracting some of the leading international golfers. It was held at the Ibusuki Golf Club, Kaimon Course in Ibusuki, Kagoshima from 1981 to 2004. In 2005, it moved to the Kochi Kuroshio Country Club in Geisei, Kōchi. The event is organized by Casio, Kuroshio Kanko Kaihatsu and .