2023 Open de Oeiras

The 2023 Open de Oeiras was a professional tennis tournament played on clay courts. It was the eighth edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal between 17 and 23 April 2023.

2023 Open de Oeiras
Date	17–23 April
Edition	8th
Surface	Clay
Location	Oeiras, Portugal
Champions
Singles
Zsombor Piros
Doubles
Victor Vlad Cornea / Franko Škugor

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
FRA	Adrian Mannarino	47	1
FRA	Alexandre Müller	96	2
AUT	Sebastian Ofner	120	3
ARG	Juan Manuel Cerúndolo	123	4
POR	João Sousa	146	5
JPN	Kaichi Uchida	160	6
HUN	Zsombor Piros	167	7
ITA	Andrea Vavassori	176	8

• ¹ Rankings are as of 10 April 2023.

Other entrants

The following players received wildcards into the singles main draw:

• Henrique Rocha
• Pedro Sousa
• Duarte Vale

The following player received entry into the singles main draw as a special exempt:

• Zsombor Piros

The following player received entry into the singles main draw as an alternate:

• João Domingues

The following players received entry from the qualifying draw:

• Cezar Crețu
• Jaime Faria
• Billy Harris
• Pablo Llamas Ruiz
• Daniel Mérida
• Petr Nouza

The following player received entry as a lucky loser:

• Henri Squire

Champions

Singles

Main article: 2023 Open de Oeiras – Singles

• Zsombor Piros def. Juan Manuel Cerúndolo 6–3, 6–4.

Doubles

Main article: 2023 Open de Oeiras – Doubles

• Victor Vlad Cornea / Franko Škugor def. Marcelo Demoliner / Andrea Vavassori 7–6^(7–2), 7–6^(7–4).