2021 Slovak Open II – Doubles

Harri Heliövaara and Emil Ruusuvuori were the defending champions but chose not to defend their title.

Filip Horanský and Sergiy Stakhovsky won the title after defeating Denys Molchanov and Aleksandr Nedovyesov 6–4, 6–4 in the final.

Seeds
• # 🇨🇿 Roman Jebavý / 🇬🇧 Jonny O'Mara (quarterfinals)

• # 🇺🇦 Denys Molchanov / 🇰🇿 Aleksandr Nedovyesov (final)

• # David Pel / Sem Verbeek (first round)

• # 🇵🇱 Szymon Walków / 🇵🇱 Jan Zieliński (first round)