2020 Open Quimper Bretagne – Singles

Grégoire Barrère was the defending champion but chose not to defend his title.

Cem İlkel won the title after defeating Maxime Janvier 7–6(8–6), 7–5 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇪🇸 Guillermo García López (third round)

• # 🇷🇸 Danilo Petrović (second round, retired)

• # 🇸🇰 Lukáš Lacko (semifinals)

• # 🇫🇷 Enzo Couacaud (third round)

• # 🇫🇷 Maxime Janvier (final)

• # 🇷🇺 Alexey Vatutin (third round)

• # 🇪🇸 Bernabé Zapata Miralles (third round)

• # 🇯🇵 Hiroki Moriya (second round)

• # 🇩🇪 Matthias Bachinger (quarterfinals)

• # 🇫🇷 Tristan Lamasine (second round)

• # 🇫🇷 Quentin Halys (third round)

• # 🇩🇪 Mats Moraing (second round)

• # 🇫🇷 Constant Lestienne (third round)

• # 🇨🇿 Zdeněk Kolář (quarterfinals)

• # 🇪🇸 Roberto Ortega Olmedo (third round)

• # 🇫🇷 Mathias Bourgue (semifinals)