The 2026 Open de Oeiras was a professional tennis tournament played on clay courts. It was the 14th edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Oeiras, Portugal between 13 and 19 April 2026.
Singles main-draw entrants Seeds Country Player Rank1 SeedValentin Royer731Mattia Bellucci792Luca Van Assche943Francisco Comesaña994Mackenzie McDonald1265Dušan Lajović1286Henrique Rocha1297Elmer Møller1318 1 Rankings are as of 6 April 2026.
Other entrants The following players received wildcards into the singles main draw: Gastão Elias Frederico Ferreira Silva Tiago Pereira
The following player received entry into the singles main draw as a special exempt: Jurij Rodionov
The following players received entry into the singles main draw as alternates: Marco Cecchinato Zdeněk Kolář Timofey Skatov
The following players received entry from the qualifying draw: Rémy Bertola Jonáš Forejtek Tom Gentzsch Felix Gill Pablo Llamas Ruiz Roman Safiullin
The following players received entry as lucky losers: Max Houkes Alejandro Moro Cañas
Champions Singles
Roman Safiullin def. Valentin Royer 6–1, 6–2.
Doubles
Sriram Balaji / Neil Oberleitner def. Nicolás Barrientos / Ariel Behar 6–7(7–9), 6–4, [11–9].
References