2020 Lisboa Belém Open – Doubles

Philipp Oswald and Filip Polášek were the defending champions but chose not to defend their title.

Roberto Cid Subervi and Gonçalo Oliveira won the title after defeating Harri Heliövaara and Zdeněk Kolář 7–6(7–5), 4–6, [10–4] in the final.

Seeds
• # Romain Arneodo / 🇧🇷 Fernando Romboli (first round)

• # Treat Huey / 🇺🇸 Nathaniel Lammons (withdrew)

• # 🇺🇸 Robert Galloway / 🇺🇦 Denys Molchanov (quarterfinals)

• # 🇺🇸 James Cerretani / 🇦🇹 Tristan-Samuel Weissborn (first round)