2021 Swiss Open Gstaad – Doubles

Sander Gillé and Joran Vliegen were the reigning champions from when the tournament was last held in 2019, but chose not to participate this year.

Marc-Andrea Hüsler and Dominic Stricker won the title, defeating Szymon Walków and Jan Zieliński in the final, 6–1, 7–6(9–7).

Seeds
• # Robin Haase / Matwé Middelkoop (first round)

• # Ariel Behar / 🇪🇨 Gonzalo Escobar (first round)

• # Hugo Nys / 🇮🇹 Andrea Vavassori (first round)

• # 🇸🇪 André Göransson / Frederik Nielsen (first round)