| 2018 Bol Open | |
|---|---|
| Date | 5–10 June |
| Edition | 13th |
| Category | WTA 125K series |
| Prize money | $125,000 |
| Surface | Clay |
| Location | Bol, Croatia |
| Venue | Bluesun Tennis Center Zlatni rat |
| Champions | |
| Singles | |
 Tamara Zidanšek | |
| Doubles | |
 Mariana Duque Mariño /  Wang Yafan | |
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.