2025 Open de Oeiras II

2025 Open de Oeiras II
Date	12–17 May
Edition	13th
Surface	Clay
Location	Oeiras, Portugal
Champions
Singles
Cristian Garín
Doubles
Andreas Mies / David Vega Hernández

The 2025 Open de Oeiras II was a professional tennis tournament played on clay courts. It was the 13th edition of the tournament which was part of the 2025 ATP Challenger Tour. It took place in Oeiras, Portugal between 12 and 17 May 2025.

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
BRA	Thiago Monteiro	106	1
POR	Jaime Faria	108	2
USA	Christopher Eubanks	110	3
DEN	Elmer Møller	111	4
USA	Tristan Boyer	122	5
BRA	Felipe Meligeni Alves	123	6
ARG	Thiago Agustín Tirante	133	7
ARG	Román Andrés Burruchaga	135	8

• ¹ Rankings are as of 5 May 2025.

Other entrants

The following players received wildcards into the singles main draw:

• Pedro Araújo
• Gastão Elias
• Tiago Pereira

The following player received entry into the singles main draw using a protected ranking:

• Wu Yibing

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

• Pedro Cachin
• Genaro Alberto Olivieri
• Elias Ymer

The following players received entry from the qualifying draw:

• Kenny de Schepper
• Daniel Mérida
• Ryan Nijboer
• Leandro Riedi
• Alexey Vatutin
• Giulio Zeppieri

The following players received entry as lucky losers:

• João Domingues
• Eero Vasa

Champions

Singles

Main article: 2025 Open de Oeiras II – Singles

• Cristian Garín def. Mitchell Krueger 7–6^(7–3), 4–6, 6–2.

Doubles

Main article: 2025 Open de Oeiras II – Doubles

• Andreas Mies / David Vega Hernández def. Marcelo Demoliner / David Pichler 6–4, 6–4.