2021 Open Sud de France – Singles

Gaël Monfils was the defending champion, but chose not to defend his title.

With the loss of Ugo Humbert in the quarterfinals, this was the first tournament without a French champion since 2017 when Alexander Zverev won the title. It was also the first without a French finalist since 2004. David Goffin won the title, defeating Roberto Bautista Agut in the final, 5–7, 6–4, 6–2.

Seeds
The top four seeds received a bye into the second round. • #🇪🇸 Roberto Bautista Agut (final)

• #🇧🇪 David Goffin (champion)

• #🇷🇸 Dušan Lajović (second round)

• #🇵🇱 Hubert Hurkacz (second round)

• #🇮🇹 Jannik Sinner (first round)

• #🇫🇷 Ugo Humbert (quarterfinals)

• #🇮🇹 Lorenzo Sonego (quarterfinals)

• #🇩🇪 Jan-Lennard Struff (first round)

Seeds
• # 🇵🇱 Kamil Majchrzak (first round)

• # 🇫🇷 Grégoire Barrère (qualified)

• # 🇫🇷 Antoine Hoang (qualifying competition)

• # 🇧🇦 Damir Džumhur (first round)

• # 🇫🇷 Arthur Rinderknech (first round)

• # 🇪🇸 Carlos Alcaraz (first round)

• # 🇪🇸 Bernabé Zapata Miralles (qualified)

• # 🇩🇪 Peter Gojowczyk (qualified)

Qualifiers
• # 🇩🇪 Peter Gojowczyk

• # 🇫🇷 Grégoire Barrère

• # Tallon Griekspoor

• # 🇪🇸 Bernabé Zapata Miralles