The tournament was first held in 1973 as the Toray Sillook Championships. In 1976, the name was changed to the
Sillook Open in Tokyo. In 1982 it was renamed the
TV Championships and in 1983, it changed yet again to the
Queens Grand Prix. Its current name, the
Pan Pacific Open, was designated in 1984 and had traditionally been played on indoor carpet at the
Tokyo Metropolitan Gymnasium. In 2008, the event moved to outdoor hard courts at the
Ariake Coliseum. It was classified as a
Tier I tournament from 1993 through 2008. Then, it became a Premier 5 tournament in 2009 until it was downgraded to a Premier event from the 2014 edition onwards, with the
Wuhan Open in Wuhan, China acting as its replacement in the Premier category.
Martina Hingis holds the record for most singles titles with five. ==Past finals==