2023 Oeiras Ladies Open

The 2023 Oeiras Ladies Open was a professional tennis tournament played on outdoor clay courts. It was the third edition of the tournament, which was part of the 2023 ITF Women's World Tennis Tour. It took place in Oeiras, Portugal, between 17 and 23 April 2023.

Singles

 * 🇲🇪 Danka Kovinić def. 🇪🇸 Rebeka Masarova, 6–2, 6–2

Doubles

 * 🇳🇴 Ulrikke Eikeri / 🇯🇵 Eri Hozumi def. Francisca Jorge /  Matilde Jorge, 4–6, 6–4, [10–5]

Seeds

 * Rankings are as of 10 April 2023.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇨🇦 Eugenie Bouchard
 * Matilde Jorge
 * 🇺🇦 Elina Svitolina

The following player received entry into the singles main draw using a protected ranking:
 * 🇫🇷 Amandine Hesse

The following players received entry from the qualifying draw:
 * 🇧🇦 Nefisa Berberović
 * 🇲🇹 Francesca Curmi
 * Isabella Kruger
 * 🇨🇿 Jesika Malečková
 * 🇩🇪 Luisa Meyer auf der Heide
 * 🇱🇹 Justina Mikulskytė
 * 🇪🇸 Nuria Párrizas Díaz
 * 🇫🇷 Margaux Rouvroy

The following player received entry as a lucky loser:
 * 🇪🇸 Lucía Cortez Llorca