2018 Tampere Open – Men's singles

Calvin Hemery was the defending champion but chose not to defend his title.

Tallon Griekspoor won the title after defeating Juan Ignacio Londero 6–3, 2–6, 6–3 in the final.

Seeds
• # 🇧🇴 Hugo Dellien (semifinals)

• # Pedro Sousa (first round)

• # 🇦🇷 Juan Ignacio Londero (final)

• # 🇦🇷 Marco Trungelliti (quarterfinals)

• # 🇵🇱 Kamil Majchrzak (quarterfinals)

• # Tallon Griekspoor (champion)

• # 🇫🇷 Antoine Hoang (quarterfinals)

• # 🇫🇷 Gleb Sakharov (first round)