2023 Oeiras Indoors

The 2023 Oeiras Indoors was a professional tennis tournament played on hard courts. It was the 1st edition of the tournament which was part of the 2023 ATP Challenger Tour. It took place in Oeiras, Portugal from 2 to 8 January 2023.

Seeds

 * 1 Rankings are as of 26 December 2022.

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

The following players received entry from the qualifying draw:
 * 🇧🇪 Joris De Loore
 * 🇫🇷 Kenny de Schepper
 * 🇹🇷 Cem İlkel
 * Alibek Kachmazov
 * 🇪🇪 Mark Lajal
 * Dino Prižmić

The following player received entry as a lucky loser:
 * 🇮🇱 Edan Leshem

Singles

 * 🇧🇪 Joris De Loore def. 🇷🇴 Filip Cristian Jianu 6–3, 6–2.

Doubles

 * 🇷🇴 Victor Vlad Cornea / 🇨🇿 Petr Nouza def. 🇫🇷 Jonathan Eysseric / 🇫🇷 Pierre-Hugues Herbert 6–3, 7–6(7–3).