2018 Banja Luka Challenger – Doubles

Marin and Tomislav Draganja were the defending champions, but only Tomislav chose to defend his title, partnering Alessandro Giannessi. Tomislav Draganja lost in the quarterfinals to Andrej Martin and Hans Podlipnik Castillo.

Martin and Podlipnik Castillo won the title after defeating Laurynas Grigelis and Alessandro Motti 7–5, 4–6, [10–7] in the final.

Seeds
• # 🇩🇪 Kevin Krawietz / 🇩🇪 Andreas Mies (quarterfinals)

• # Ante Pavić / Antonio Šančić (first round)

• # 🇮🇹 Julian Ocleppo / 🇮🇹 Andrea Vavassori (first round)

• # 🇷🇸 Nikola Ćaćić / 🇦🇹 Tristan-Samuel Weissborn (quarterfinals)