2018 Bol Open

The 2018 Bol Open was a professional tennis tournament played on outdoor clay courts. It was the thirteenth edition of the tournament and part of the 2018 WTA 125K series. It took place in Bol, Croatia, on 5–10 June 2018.

Seeds

 * 1 Rankings as of 28 May 2018.

Other entrants
The following players received a wildcard into the singles main draw:
 * Lea Bošković
 * Tena Lukas
 * 🇨🇿 Barbora Štefková

Withdrawals

 * Before the tournament
 * 🇺🇸 Jennifer Brady → replaced by 🇷🇴 Elena-Gabriela Ruse
 * 🇸🇰 Jana Čepelová → replaced by 🇨🇿 Tereza Martincová
 * Dalila Jakupović → replaced by 🇸🇰 Kristína Kučová
 * 🇸🇪 Johanna Larsson → replaced by 🇪🇸 Sílvia Soler Espinosa
 * 🇺🇸 Bernarda Pera → replaced by 🇷🇴 Alexandra Cadanțu
 * 🇸🇪 Rebecca Peterson → replaced by 🇧🇬 Viktoriya Tomova
 * 🇰🇿 Yulia Putintseva → replaced by 🇸🇰 Michaela Hončová
 * Stefanie Vögele → replaced by 🇷🇺 Sofya Zhuk

Seeds

 * 1 Rankings as of 28 May 2018.

The following team received wildcard into the doubles draw:
 * 🇺🇦 Anhelina Kalinina / 🇺🇦 Marta Kostyuk

Singles

 * Tamara Zidanšek def. 🇵🇱 Magda Linette 6–1, 6–3

Doubles

 * 🇨🇴 Mariana Duque Mariño / 🇨🇳 Wang Yafan def. 🇪🇸 Sílvia Soler Espinosa / 🇨🇿 Barbora Štefková 6–3, 7–5