2018 Fukuoka International Women's Cup – Singles

Magdaléna Rybáriková was the defending champion, but chose to compete in Madrid instead.

Katie Boulter won the title, defeating Ksenia Lykina in the final, 5–7, 6–4, 6–2.

Seeds
• # 🇬🇧 Naomi Broady (quarterfinals)

• # 🇦🇺 Arina Rodionova (semifinals)

• # 🇰🇷 Jang Su-jeong (second round)

• # 🇬🇧 Gabriella Taylor (first round)

• # 🇬🇧 Katie Boulter (champion)

• # 🇯🇵 Miharu Imanishi (withdrew)

• # 🇯🇵 Junri Namigata (second round)

• # 🇬🇧 Laura Robson (first round)