2021 Sparkassen Open – Doubles

Simone Bolelli and Guillermo Durán were the defending champions but only Durán chose to defend his title, partnering Tim Sandkaulen. Durán lost in the quarterfinals to Szymon Walków and Jan Zieliński.

Walków and Zieliński won the title after defeating Ivan and Matej Sabanov 6–4, 4–6, [10–4] in the final.

Seeds
• # Ivan Sabanov / Matej Sabanov (final)

• # 🇧🇷 Fernando Romboli / 🇪🇸 David Vega Hernández (semifinals, withdrew)

• # 🇨🇿 Zdeněk Kolář / 🇫🇷 Albano Olivetti (first round)

• # 🇺🇸 James Cerretani / 🇸🇰 Igor Zelenay (first round)