| 2018 Toray Pan Pacific Open | |
|---|---|
| Date | 17–23 September |
| Edition | 35th |
| Category | WTA Premier |
| Draw | 28S / 16D |
| Prize money | $799,000 |
| Surface | Hard / indoor |
| Location | Tachikawa, Tokyo, Japan |
| Venue | Arena Tachikawa Tachihi |
| Champions | |
| Singles | |
 Karolína Plíšková | |
| Doubles | |
 Miyu Kato / Makoto Ninomiya | |
The 2018 Toray Pan Pacific Open is a women's tennis tournament played on indoor hard courts. It was the 35th edition of the Pan Pacific Open, and part of the Premier Series of the 2018 WTA Tour. It took place at the Arena Tachikawa Tachihi in Tachikawa, Tokyo, Japan, on 17–23 September 2018.[1][2]