2021 Split Open – Doubles

Treat Huey and Nathaniel Lammons were the defending champions but chose not to defend their title.

Andrey Golubev and Aleksandr Nedovyesov won the title after defeating Szymon Walków and Jan Zieliński 7–5, 6–7(5–7), [10–5] in the final.

Seeds
• # 🇰🇿 Andrey Golubev / 🇰🇿 Aleksandr Nedovyesov (champions)

• # 🇫🇷 Albano Olivetti / 🇦🇺 Matt Reid (semifinals)

• # 🇺🇸 Robert Galloway / 🇺🇸 Alex Lawson (quarterfinals)

• # 🇮🇳 Purav Raja / 🇦🇹 Tristan-Samuel Weissborn (quarterfinals)