Samantha Stosur was the defending champion, but chose not to participate.
Yanina Wickmayer won the title, defeating
Magda Linette in the final 4–6, 6–3, 6–3.
Seeds
Draw
Finals
Top half
Bottom half
Qualifying
Seeds
Qualifiers
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
Main DrawQualifying Draw
{{DEFAULTSORT:2015 Japan Women's Open - Singles
Japan Women's Open
2015 Japan Women's Open