The 2020 Open Sud de France was a men's tennis tournament played on indoor hard courts.

It was the 33rd edition of the event, and part of the ATP Tour 250 series of the 2020 ATP Tour.

It took place at the Arena Montpellier in Montpellier, France, from 3 February until 9 February 2020.

Gaël Monfils won the singles title.

[1] The following players received wildcards into the singles main draw: The following player received entry using a protected ranking into the singles main draw: The following players received entry from the qualifying draw: The following pairs received wildcards into the doubles main draw: The following pair received entry as alternates: