The 1990 PGA of Japan Tour was the 18th season of the PGA of Japan Tour, the main professional golf tour in Japan since it was formed in 1973.
The following table lists official events during the 1990 season.
The money list was based on prize money won during the season, calculated in Japanese yen.
The 1990 Japan Challenge Tour was the sixth season of the Japan Challenge Tour, the official development tour to the PGA of Japan Tour.
The following table lists official events during the 1990 season.