| Date: | 17–23 April 2023 |
| Edition: | 3rd |
| Surface: | Clay / Outdoor |
| Location: | Oeiras, Portugal |
| Category: | ITF Women's World Tennis Tour |
| Prize Money: | $100,000 |
| Champs: |  Danka Kovinić |
| Champd: |  Ulrikke Eikeri /  Eri Hozumi |
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.[1]
See main article: 2023 Oeiras Ladies Open – Singles.
Danka Kovinić def. 
Rebeka Masarova, 6–2, 6–2See main article: 2023 Oeiras Ladies Open – Doubles.
Ulrikke Eikeri / Eri Hozumi def. Francisca Jorge / Matilde Jorge, 4–6, 6–4, [10–5]| Country | Player | Rank | Seed | |
|---|---|---|---|---|
 Czech Republic | Marie Bouzková | 34 | 1 | |
| Czech Republic | Linda Nosková | 53 | 2 | |
 Egypt | Mayar Sherif | 61 | 3 | |
| Anna Blinkova | 63 | 4 | ||
| Montenegro | Danka Kovinić | 73 | 5 | |
| Spain | Nuria Párrizas Díaz | 80 | 6 | |
 Italy | Sara Errani | 85 | 7 | |
 Hungary | Anna Bondár | 87 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw using a protected ranking:
The following players received entry from the qualifying draw:
Nefisa Berberović
Francesca Curmi Jesika Malečková
Justina Mikulskytė Nuria Párrizas Díaz
Margaux RouvroyThe following player received entry as a lucky loser:
