2017 Banja Luka Challenger – Singles

Adam Pavlásek was the defending champion but chose not to defend his title.

Maximilian Marterer won the title after defeating Carlos Taberner 6–1, 6–2 in the final.

Seeds
• # 🇪🇸 Roberto Carballés Baena (second round)

• # 🇪🇸 Guillermo García López (withdrew)

• # 🇩🇪 Maximilian Marterer (champion)

• # 🇷🇸 Nikola Milojević (quarterfinals)

• # 🇪🇸 Ricardo Ojeda Lara (second round)

• # 🇮🇹 Lorenzo Giustino (first round)

• # 🇪🇸 Jaume Munar (second round, withdrew)

• # 🇨🇿 Václav Šafránek (first round)