2021 Open Sud de France

The 2021 Open Sud de France was a men's tennis tournament played on indoor hard courts. It is the 34th edition of the event, and part of the ATP Tour 250 series of the 2021 ATP Tour. It takes place at the Arena Montpellier in Montpellier, France, from 22 February until 28 February 2021.

Singles

 * 🇧🇪 David Goffin defeated 🇪🇸 Roberto Bautista Agut, 5–7, 6–4, 6–2.

Doubles

 * 🇫🇮 Henri Kontinen / 🇫🇷 Édouard Roger-Vasselin defeated 🇮🇱 Jonathan Erlich / 🇧🇾 Andrei Vasilevski, 6–2, 7–5.

Seeds

 * 1 Rankings are as of February 8, 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇫🇷 Benjamin Bonzi
 * 🇫🇷 Hugo Gaston
 * 🇬🇧 Andy Murray

The following players received entry from the qualifying draw:
 * 🇫🇷 Grégoire Barrère
 * 🇩🇪 Peter Gojowczyk
 * Tallon Griekspoor
 * 🇪🇸 Bernabé Zapata Miralles

Withdrawals

 * 🇪🇸 Pablo Carreño Busta → replaced by 🇦🇹 Dennis Novak
 * 🇬🇧 Kyle Edmund → replaced by 🇫🇷 Gilles Simon
 * 🇫🇷 Richard Gasquet → replaced by 🇺🇸 Sebastian Korda
 * 🇷🇸 Filip Krajinović → replaced by 🇨🇿 Jiří Veselý
 * 🇦🇺 Nick Kyrgios → replaced by 🇸🇰 Norbert Gombos
 * 🇪🇸 Feliciano López → replaced by 🇸🇪 Mikael Ymer
 * 🇺🇸 Reilly Opelka → replaced by 🇺🇸 Marcos Giron

Seeds

 * 1 Rankings as of January 25, 2021.

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇧🇪 David Goffin / 🇫🇷 Lucas Pouille
 * 🇫🇷 Fabrice Martin / 🇫🇷 Gilles Simon

The following pair received entry into the main draw using a protected ranking:
 * 🇷🇸 Dušan Lajović / 🇪🇸 Marc López