See main article: article and 2019 Toray Pan Pacific Open.
Miyu Kato and Makoto Ninomiya were the defending champions[1] but chose to participate with different partners. Kato played alongside Storm Sanders, but they lost in the first round to Gabriela Dabrowski and Caroline Garcia. Ninomiya partnered Eri Hozumi, but lost in the quarterfinals to Nadiia Kichenok and Abigail Spears.
Chan Hao-ching and Latisha Chan won the title, defeating Hsieh Su-wei and Hsieh Yu-chieh in the final, 7–5, 7–5.