Oeiras CETO Open
ITF Women's Tour
Event name	Oeiras CETO Open (2023–) Magnesium K Active Ladies Open (2016–22)
Location	Oeiras, Portugal
Venue	Clube Escola de Ténis de Oeiras
Category	ITF Women's World Tennis Tour
Surface	Clay
Draw	32S/32Q/16D
Prize money	$100,000
Current champions
Singles	Jana Fett
Doubles	Francisca Jorge Matilde Jorge

The Oeiras CETO Open is a tournament for professional female tennis players played on outdoor clay courts. The event is classified as a $100,000 ITF Women's World Tennis Tour tournament and has been held in Oeiras, Portugal, since 2016.^[1]

Year	Champion	Runner-up	Score
2024	Jana Fett	Panna Udvardy	6–0, 6–2
2023	Nigina Abduraimova	Francisca Jorge	1–6, 6–4, 6–3
2022	Diana Shnaider	Martina Di Giuseppe	6–4, 6–2
2021 (2)	María Gutiérrez Carrasco	Marina Melnikova	6–3, 6–2
2021 (1)	Anhelina Kalinina	Jang Su-jeong	6–4, 4–6, 6–4
2020	Clara Tauson	María Gutiérrez Carrasco	6–3, 6–2
2019	Not held
2018	Ylena In-Albon	Tamaryn Hendler	7–5, ret.
2017	Panna Udvardy	Gaia Sanesi	6–7(5–7), 7–5, 6–4
2016	Angelica Moratelli	Victoria Bosio	6–4, 6–2

Year	Champions	Runners-up	Score
2024	Francisca Jorge Matilde Jorge	Yana Sizikova Wu Tung-lin	6–2, 6–0
2023	Fernanda Contreras Ingrid Gamarra Martins	Jesika Malečková Renata Voráčová	6–3, 6–2
2022	Jéssica Bouzas Maneiro Guiomar Maristany	Francisca Jorge Matilde Jorge	3–6, 6–4, [10–8]
2021 (2)	Adrienn Nagy Park So-hyun	Riya Bhatia Gabriela Cé	6–4, 6–0
2021 (1)	Suzan Lamens Marina Melnikova	Natela Dzalamidze Sofya Lansere	6–3, 6–1
2020	Eva Guerrero Álvarez Diane Parry	Francisca Jorge Olga Parres Azcoitia	7–6(7–1), 6–0
2019	Not held
2018	Anna Klasen Romy Kölzer	Alba Carrillo Marín Cláudia Cianci	6–3, 6–3
2017	Gaia Sanesi Martina Spigarelli	Sarah Beth Grey Olivia Nicholls	6–0, 6–2
2016	Andrea Ka Laëtitia Sarrazin	Carolina Alves Victoria Bosio	4–6, 7–5, [10–3]