2025 Lisboa Belém Open

The 2025 Del Monte Lisboa Belém Open was a professional tennis tournament played on outdoor clay courts. It was the ninth and fifth editions (for men and women, respectively) of the tournament, which was part of the 2025 ATP Challenger Tour and the 2025 ITF Women's World Tennis Tour. It took place in Lisbon, Portugal, between 22 and 28 September 2025.

• Vilius Gaubas def. Henrique Rocha 6–7^(3–7), 6–3, 6–4.

• Simona Waltert def. Darja Semeņistaja, 6–2, 6–1

• Pablo Llamas Ruiz / Sergio Martos Gornés def. Alexandru Jecan / Bogdan Pavel 7–6^(7–5), 6–4.

• Matilde Jorge / Naïma Karamoko def. Dalila Jakupović / Nika Radišić, 6–2, 6–3

• ¹ Rankings are as of 15 September 2025.^[1]

The following players received wildcards into the singles main draw:

• Pedro Araújo
• Frederico Ferreira Silva
• Tiago Pereira

The following players received entry into the singles main draw through the Next Gen Accelerator programme:

• Matej Dodig
• Joel Schwärzler

The following players received entry into the singles main draw as alternates:

• Stefano Travaglia
• Elias Ymer

The following players received entry from the qualifying draw:

• Marco Cecchinato
• Pablo Llamas Ruiz
• Alejandro Moro Cañas
• Christoph Negritu
• Alexander Ritschard
• Francisco Rocha

• Rankings are as of 15 September 2025.

The following players received wildcards into the singles main draw:

• Teresa Franco Dias
• Sara Lança
• Ana Filipa Santos
• Angelina Voloshchuk

The following players received entry from the qualifying draw:

• Amina Anshba
• Gina Dittmann
• Gina Feistel
• Nadiia Kolb
• Alizé Lim
• María Martínez Vaquero
• Tayisiya Morderger
• Carolin Raschdorf