The 2014 Japan Women's Open was a women's tennis tournament played on outdoor hard courts. It was the sixth edition of the Japan Women's Open, and part of the WTA International tournaments of the 2014 WTA Tour. It was held at the Utsubo Tennis Center in Osaka, Japan, from October 6 through October 12, 2014. First-seeded Samantha Stosur won the singles title.
See main article: 2014 Japan Women's Open – Singles. 
Samantha Stosur defeated 
Zarina Diyas, 7–6(9–7), 6–3
See main article: 2014 Japan Women's Open – Doubles. 
Shuko Aoyama / 
Renata Voráčová defeated 
Lara Arruabarrena / Tatjana Maria, 6–1, 6–2
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q3 | width=85 | Q2 | width=85 | Q1 |
| Singles | 280 | 180 | 110 | 60 | 30 | 1 | 18 | 14 | 10 | 1 | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 1 |
| Event | W | F | SF | QF | Round of 16 | Round of 321 | width=85 | Q3 | width=85 | Q2 | width=85 | Q1 |
| Singles | $43,000 | $21,400 | $11,300 | $5,900 | $3,310 | $1,925 | $1,005 | $730 | $530 | |||
| Doubles | $12,300 | $6,400 | $3,435 | $1,820 | $960 | |||||||
| Doubles prize money per team | ||||||||||||
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Australia | Samantha Stosur | 21 | 1 | |
| Madison Keys | 32 | 2 | ||
 Ukraine | Elina Svitolina | 33 | 3 | |
| CoCo Vandeweghe | 38 | 4 | ||
| Kazakhstan | Zarina Diyas | 39 | 5 | |
 United Kingdom | Heather Watson | 47 | 6 | |
| Christina McHale | 52 | 7 | ||
| Lauren Davis | 55 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry using a protected ranking into the singles main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Kimiko Date-Krumm → replaced by Erika Sema Casey Dellacqua (lower leg injury) → replaced by Tatjana Maria Misa Eguchi Kurumi Nara (respiratory illness) → replaced by Miharu Imanishi
Paula Ormaechea → replaced by 
Bethanie Mattek-Sands
Alison Van Uytvanck → replaced by Sachia Vickery Jarmila Gajdošová (left ankle sprain) Madison Keys (right rib injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Chan Hao-ching | Chan Yung-jan | 59 | 1 | |||
 Poland | Klaudia Jans-Ignacik |  France | Kristina Mladenovic | 79 | 2 | |
| Lisa Raymond | Australia | Samantha Stosur | 84 | 3 | ||
| Darija Jurak | Megan Moulton-Levy | 114 | 4 |
The following pairs received wildcards into the doubles main draw:
