2019 Tampere Open – Men's singles

Tallon Griekspoor was the defending champion but lost in the final to Mikael Ymer.

Ymer won the title after defeating Griekspoor 6–3, 5–7, 6–3 in the final.

Seeds
All seeds receive a bye into the second round. • # Pedro Sousa (semifinals, retired)

• # 🇸🇪 Elias Ymer (quarterfinals)

• # 🇸🇪 Mikael Ymer (champion)

• # 🇧🇪 Kimmer Coppejans (quarterfinals)

• # Blaž Rola (semifinals)

• # 🇮🇹 Federico Gaio (second round)

• # 🇦🇷 Federico Coria (quarterfinals)

• # 🇸🇰 Filip Horanský (third round)

• # Tallon Griekspoor (final)

• # 🇪🇨 Roberto Quiroz (second round)

• # 🇷🇸 Peđa Krstin (quarterfinals)

• # 🇨🇿 Zdeněk Kolář (second round)

• # 🇮🇹 Matteo Viola (second round)

• # Gonçalo Oliveira (second round)

• # 🇪🇪 Jürgen Zopp (second round)

• # 🇫🇮 Emil Ruusuvuori (third round)