| Type: | itf women's circuit |
| Portugal Ladies Open | |
| Current: | 2023 Caldas da Rainha Ladies Open |
| Event Name: | Caldas da Rainha Ladies Open (2022–) Portugal Ladies Open (2021) Oeste Ladies Open (2019) |
| Location: | Caldas da Rainha, Portugal |
| Venue: | Clube Ténis Caldas da Rainha |
| Category: | ITF Women's Circuit |
| Surface: | Hard |
| Draw: | 32S/24Q/16D |
| Prize Money: | $60,000+H |
The Caldas da Rainha Ladies Open is a tournament for professional female tennis players. The event is classified as a $60,000+H ITF Women's Circuit tournament and has been held on outdoor hardcourts in Caldas da Rainha, Portugal, since 2019.
| Year | Champion | Runner-up | Score | |
|---|---|---|---|---|
| Petra Marčinko | 6–4, 6–1 | |||
 Lucrezia Stefanini | 3–6, 6–1, 7–6(7–3) | |||
 Zheng Saisai | 6–4, 3–6, 6–3 | |||
| 2020 | ||||
| Isabella Shinikova | 6–3, 2–0 ret. |
| Year | Champions | Runners-up | Score | |
|---|---|---|---|---|
| Francisca Jorge Matilde Jorge | 6–1, 2–6, [10–7] | |||
 Adriana Reami Anna Rogers | 6–4, 7–5 | |||
 Momoko Kobori Hiroko Kuwata | 7–6(7–5), 7–6(7–2) | |||
| 2020 | ||||
 Jessika Ponchet Isabella Shinikova | 6–1, 6–3 |