| 2018 Engie Open de Biarritz | |
|---|---|
| Date | 10–16 September |
| Edition | 16th |
| Category | ITF Women's Circuit |
| Prize money | $80,000 |
| Surface | Clay |
| Location | Biarritz, France |
| Champions | |
| Singles | |
 Tamara Korpatsch | |
| Doubles | |
 Irina Bara /  Valentyna Ivakhnenko | |
The 2018 Open de Biarritz was a professional tennis tournament played on outdoor clay courts. It was the sixteenth edition of the tournament and was part of the 2018 ITF Women's Circuit. It took place in Biarritz, France, on 10–16 September 2018.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| GER
|
Carina Witthöft | 101 | 1 |
 UZB
|
Sabina Sharipova | 123 | 2 |
 BEL
|
Ysaline Bonaventure | 124 | 3 |
 UKR
|
Anhelina Kalinina | 134 | 4 |
| ROU
|
Irina Bara | 139 | 5 |
| GER
|
Laura Siegemund | 146 | 6 |
 SUI
|
Conny Perrin | 148 | 7 |
| RUS
|
Irina Khromacheva | 149 | 8 |
The following players received a wildcard into the singles main draw:
The following player received entry using a protected ranking:
The following players received entry by special exempts:
The following players received entry from the qualifying draw:
|
Main article: 2018 Engie Open de Biarritz – Singles |
Tamara Korpatsch def. Timea Bacsinszky, 6–2, 7–5|
Main article: 2018 Engie Open de Biarritz – Doubles |
Irina Bara / Valentyna Ivakhnenko def. Ysaline Bonaventure / Hélène Scholsen, 6–4, 6–1
