2020 Lisboa Belém Open

The 2020 Lisboa Belém Open was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2020 ATP Challenger Tour. It took place in Lisbon, Portugal between 12 and 18 October 2020.

Seeds

 * 1 Rankings are as of 28 September 2020.

Other entrants
The following players received wildcards into the singles main draw:
 * Nuno Borges
 * Gastão Elias
 * Gonçalo Oliveira

The following player received entry into the singles main draw as a special exempt:
 * 🇧🇦 Damir Džumhur

The following players received entry from the qualifying draw:
 * 🇧🇷 Guilherme Clezar
 * Borna Gojo
 * 🇧🇬 Dimitar Kuzmanov
 * 🇦🇹 Sebastian Ofner

Singles

 * 🇪🇸 Jaume Munar def. Pedro Sousa 7–6(7–3), 6–2.

Doubles

 * 🇩🇴 Roberto Cid Subervi / Gonçalo Oliveira def. 🇫🇮 Harri Heliövaara / 🇨🇿 Zdeněk Kolář 7–6(7–5), 4–6, [10–4].