2021 French Open – Boys' doubles

In the 2021 French Open – Boys' doubles, Flavio Cobolli and Dominic Stricker were the defending champions, but both players were no longer eligible to participate in junior events.

Arthur Fils and Giovanni Mpetshi Perricard won the title after defeating Martin Katz and German Samofalov 7–5, 6–2 in the final.

Seeds
• # 🇪🇪 Mark Lajal / 🇬🇧 Jack Pinnington Jones (second round)

• # 🇺🇸 Alexander Bernard / 🇺🇸 Dali Blanch (first round)

• # 🇺🇸 Jack Anthrop / 🇨🇳 Shang Juncheng (second round, withdrew)

• # 🇫🇷 Arthur Fils / 🇫🇷 Giovanni Mpetshi Perricard (champions)

• # 🇸🇪 Leo Borg / 🇧🇷 Pedro Boscardin Dias (first round)

• # 🇫🇷 Sean Cuenin / 🇫🇷 Luca Van Assche (first round)

• # 🇺🇸 Samir Banerjee / 🇺🇸 Ozan Colak (quarterfinals)

• # Jérôme Kym / 🇮🇹 Luca Nardi (second round, withdrew)