2021 Open Castilla y León – Doubles

Sander Arends and David Pel were the defending champions but chose not to defend their title.

Robert Galloway and Alex Lawson won the title after defeating JC Aragone and Nicolás Barrientos 7–6(10–8), 6–4 in the final.

Seeds
• # 🇺🇸 Robert Galloway / 🇺🇸 Alex Lawson (champions)

• # 🇮🇳 Arjun Kadhe / Gonçalo Oliveira (semifinals)

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

• # 🇪🇨 Diego Hidalgo / 🇪🇸 Sergio Martos Gornés (quarterfinals)