See main article: 2021 Split Open II.
Andrey Golubev and Aleksandr Nedovyesov were the defending champions[1] but lost in the semifinals to Szymon Walków and Jan Zieliński.
Walków and Zieliński won the title after defeating Grégoire Barrère and Albano Olivetti 6–2, 7–5 in the final.