2021 St. Petersburg Open – Doubles

Jürgen Melzer and Édouard Roger-Vasselin were the defending champions, but Roger-Vasselin chose not to participate and Melzer chose to compete in Vienna instead.

Jamie Murray and Bruno Soares won the title, defeating Andrey Golubev and Hugo Nys in the final, 6–3, 6–4.

Seeds
• # 🇬🇧 Jamie Murray / 🇧🇷 Bruno Soares (champions)

• # Raven Klaasen / 🇯🇵 Ben McLachlan (first round)

• # Marcelo Arévalo /  Matwé Middelkoop (first round)

• # 🇰🇿 Andrey Golubev / Hugo Nys (final)