2021 Porto Open – Doubles

This was the first edition of the tournament.

Guido Andreozzi and Guillermo Durán won the title after defeating Renzo Olivo and Miguel Ángel Reyes-Varela 6–7(5–7), 7–6(7–5), [11–9] in the final.

Seeds
• # 🇫🇷 Sadio Doumbia / 🇫🇷 Fabien Reboul (quarterfinals)

• # 🇺🇸 Hunter Reese / Sem Verbeek (semifinals)

• # 🇺🇸 Robert Galloway / 🇺🇸 Alex Lawson (semifinals)

• # 🇺🇦 Sergiy Stakhovsky / 🇦🇹 Tristan-Samuel Weissborn (first round)