2021 Sánchez-Casal Cup – Doubles

Szymon Walków and Tristan-Samuel Weissborn were the defending champions but chose not to defend their title.

Harri Heliövaara and Roman Jebavý won the title after defeating Nuno Borges and Francisco Cabral 6–4, 6–3 in the final.

Seeds
• # 🇫🇮 Harri Heliövaara / 🇨🇿 Roman Jebavý (champions)

• # 🇺🇦 Denys Molchanov / 🇪🇸 David Vega Hernández (quarterfinals)

• # 🇦🇹 Alexander Erler / 🇦🇹 Lucas Miedler (semifinals)

• # 🇮🇳 Jeevan Nedunchezhiyan / 🇮🇳 Purav Raja (first round)