2018 Japan Women's Open
The 2018 Japan Women's Open was a women's tennis tournament played on outdoor hard courts. It was the tenth edition of the Japan Women's Open, and part of the WTA International tournaments of the 2018 WTA Tour. It was held at the Regional Park Tennis Stadium in Hiroshima, Japan, from September 10 through September 16, 2018. This is the first year that the tournament was held in Hiroshima.
Finals
Singles
- Hsieh Su-wei defeated Amanda Anisimova 6–2, 6–2
Doubles
- Eri Hozumi / Zhang Shuai defeated Miyu Kato / Makoto Ninomiya 6–2, 6–4
Point distribution
Prize money
1 Qualifiers prize money is also the Round of 32 prize money2 Per team
Singles main-draw entrants
Seeds
Other entrants
The following players received wildcards into the singles main draw:The following player entered the singles main draw with a protected ranking:
The following players received entry from the qualifying draw:
Withdrawals
;Before the tournament- Ana Bogdan → replaced by Fiona Ferro
- Jennifer Brady → replaced by Jana Fett
- Aliaksandra Sasnovich → replaced by Duan Yingying
- Stefanie Vögele → replaced by Magdalena Fręch
Retirements
Doubles main-draw entrants
Seeds
- 1 Rankings are as of August 27, 2018