2018 Toray Pan Pacific Open – Singles

Singles
2018 Toray Pan Pacific Open
Champion Karolína Plíšková
Runner-up Naomi Osaka
Score6–4, 6–4

Caroline Wozniacki was the two-time defending champion, but lost in the second round to Camila Giorgi.

Karolína Plíšková won the title, defeating Naomi Osaka in the final, 6–4, 6–4. Plíšková won the title after saving two match points Alison Riske had against her in the quarterfinals.