2021 Argentina Open – Doubles

Marcel Granollers and Horacio Zeballos were the defending champions, but they decided not to participate this year.

Tomislav Brkić and Nikola Ćaćić won the title, defeating Ariel Behar and Gonzalo Escobar in the final, 6–3, 7–5.

Seeds
• # 🇺🇸 Austin Krajicek / Franko Škugor (semifinals)

• # 🇧🇷 Marcelo Demoliner / 🇲🇽 Santiago González (first round)

• # 🇮🇹 Simone Bolelli / 🇦🇷 Máximo González (quarterfinals)

• # Ariel Behar / 🇪🇨 Gonzalo Escobar (final)