2021 Lošinj Open – Doubles

This was the first edition of the tournament.

Andrej Martin and Tristan-Samuel Weissborn won the title after defeating Victor Vlad Cornea and Ergi Kırkın 6–1, 7–6(7–5) in the final.

Seeds
• # 🇫🇷 Sadio Doumbia / 🇫🇷 Fabien Reboul (quarterfinals)

• # Antonio Šančić / 🇳🇿 Artem Sitak (semifinals)

• # 🇮🇹 Marco Bortolotti / 🇪🇸 Sergio Martos Gornés (first round)

• # 🇺🇸 James Cerretani / 🇩🇪 Fabian Fallert (semifinals)