See main article: article and 2018 Bol Open.
Chuang Chia-jung and Renata Voráčová were the defending champions, however Chuang chose not to participate. Voráčová partnered Xenia Knoll but lost in the quarterfinals to Ysaline Bonaventure and Sara Sorribes Tormo.
Mariana Duque Mariño and Wang Yafan won the title after defeating Sílvia Soler Espinosa and Barbora Štefková 6–3, 7–5 in the final.