2023 Oeiras Indoors II

The 2023 Oeiras Indoors II was a professional tennis tournament played on hard courts. It was the 2nd edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal from 9 to 14 January 2023.

Seeds

 * 1 Rankings are as of 2 January 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * Jaime Faria
 * Gonçalo Oliveira
 * Pedro Sousa

The following player received entry into the singles main draw as a special exempt:
 * 🇧🇪 Joris De Loore

The following players received entry from the qualifying draw:
 * 🇧🇷 Gabriel Décamps
 * 🇩🇪 Elmar Ejupovic
 * 🇩🇪 Sebastian Fanselow
 * 🇹🇷 Cem İlkel
 * 🇪🇪 Mark Lajal
 * Dino Prižmić

Singles

 * 🇫🇷 Arthur Fils def. 🇧🇪 Joris De Loore 6–1, 7–6(7–4).

Doubles

 * Sander Arends / David Pel def. 🇫🇮 Patrik Niklas-Salminen /  Bart Stevens 6–3, 7–6(7–3).