| Date: | 23–29 September 2024 |
| Edition: | 8th (men) 4th (women) |
| Surface: | Clay / Outdoor |
| Location: | Lisbon, Portugal |
| Category: | ATP Challenger Tour ITF Women's World Tennis Tour |
| Prize Money: | €120,950 (men) $60,000 (women) |
| Champms: | Alexander Ritschard |
| Champmd: | Romain Arneodo /  Théo Arribagé |
| Champws: |  Victoria Jiménez Kasintseva |
| Champwd: | Francisca Jorge / Matilde Jorge |
The 2024 Lisboa Belém Open is a professional tennis tournament played on outdoor clay courts. It is the eighth (men) and fourth (women) editions of the tournament, which is part of the 2024 ATP Challenger Tour and the 2024 ITF Women's World Tennis Tour. It takes place in Lisbon, Portugal, between 23 and 29 September 2024.[1]
See main article: 2024 Lisboa Belém Open – Men's singles.
Raphaël Collignon, 6–3, 6–7(3–7), 6–3.See main article: 2024 Lisboa Belém Open – Women's singles.
Victoria Jiménez Kasintseva def. 
Guiomar Maristany, 6–4, 6–2.See main article: 2024 Lisboa Belém Open – Men's doubles.
Théo Arribagé def. 
George Goldhoff / 
Fernando Romboli, 6–2, 6–3.See main article: 2024 Lisboa Belém Open – Women's doubles.
Yvonne Cavallé Reimers / Ángela Fita Boluda, 7–6(7–5), 6–4| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Brazil | ||||
| Daniel Altmaier | 83 | 2 | ||
| Brazil | Thiago Seyboth Wild | 96 | 3 | |
 Argentina | Thiago Agustín Tirante | 99 | 4 | |
 Slovakia | Jozef Kovalík | 117 | 5 | |
 Serbia | ||||
| Alexander Ritschard | 123 | 7 | ||
 Colombia | Daniel Elahi Galán | 130 | 8 | |
 Italy | Andrea Pellegrino | 144 | 9 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw as a special exempt:
Luka PavlovicThe following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Sandro Kopp| Country | Player | Rank | Seed | |
|---|---|---|---|---|
| Arantxa Rus | 84 | 1 | ||
| Serbia | Olga Danilović | 104 | 2 | |
| France | Chloé Paquet | 110 | 3 | |
| Spain | Marina Bassols Ribera | 156 | 4 | |
| Lea Bošković | 161 | 5 | ||
 United Kingdom | Francesca Jones | 162 | 6 | |
| Anastasia Zakharova | 165 | 7 | ||
| Spain | Leyre Romero Gormaz | 173 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry into the singles main draw using a special ranking:
The following players received entry from the qualifying draw:
Ángela Fita Boluda
Sada Nahimana 
Oleksandra Oliynykova Alice RaméThe following players received entry as a lucky loser:
