2018 Hungarian Challenger Open – Singles

Jürgen Melzer was the defending champion but chose not to defend his title.

Vasek Pospisil won the title after defeating Nicola Kuhn 7–6(7–3), 3–6, 6–3 in the final.

Seeds
• # 🇭🇺 Márton Fucsovics (semifinals)

• # 🇨🇦 Vasek Pospisil (champion)

• # 🇫🇷 Quentin Halys (first round)

• # 🇸🇪 Elias Ymer (quarterfinals)

• # 🇨🇦 Félix Auger-Aliassime (second round)

• # 🇪🇪 Jürgen Zopp (quarterfinals)

• # Viktor Galović (second round)

• # 🇷🇸 Nikola Milojević (semifinals)