2021 Saint-Tropez Open

The 2021 Saint-Tropez Open was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Saint-Tropez, France between 30 August and 5 September 2021.

Seeds

 * 1 Rankings are as of 23 August 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇫🇷 Arthur Cazaux
 * 🇫🇷 Valentin Royer
 * 🇫🇷 Luca Van Assche

The following players received entry into the singles main draw as alternates:
 * 🇺🇸 JC Aragone
 * 🇫🇷 Manuel Guinard
 * 🇫🇷 Kyrian Jacquet
 * 🇫🇷 Constant Lestienne
 * Wu Tung-lin

The following players received entry from the qualifying draw:
 * 🇫🇷 Dan Added
 * 🇷🇺 Bogdan Bobrov
 * 🇫🇷 Jurgen Briand
 * 🇨🇦 Alexis Galarneau

The following players received entry as lucky losers:
 * 🇪🇪 Daniil Glinka
 * 🇫🇷 Maxime Hamou
 * 🇸🇪 Dragoș Nicolae Mădăraș

Singles

 * 🇫🇷 Benjamin Bonzi def. 🇦🇺 Christopher O'Connell 6–7(10–12), 6–1, 0–0 ret.

Doubles

 * Antonio Šančić / 🇳🇿 Artem Sitak def. Romain Arneodo / 🇫🇷 Manuel Guinard 7–6(7–5), 6–4.