2026 Open de Oeiras II

2026 Open de Oeiras II
Date	11–16 May
Edition	15th
Surface	Clay
Location	Oeiras, Portugal
Champions
Singles
Laslo Djere
Doubles
Siddhant Banthia / Alexander Donski

The 2026 Open de Oeiras II was a professional tennis tournament played on clay courts. It was the 15th edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Oeiras, Portugal between 11 and 16 May 2026.

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
CHI	Cristian Garín	104	1
USA	Emilio Nava	108	2
POR	Jaime Faria	119	3
POR	Henrique Rocha	120	4
LTU	Vilius Gaubas	121	5
BOL	Hugo Dellien	133	6
CHI	Tomás Barrios Vera	134	7
GBR	Jack Pinnington Jones	137	8

• ¹ Rankings are as of 4 May 2026.

Other entrants

The following players received wildcards into the singles main draw:

• Gastão Elias
• Frederico Ferreira Silva
• Tiago Pereira

The following players received entry into the singles main draw through the Next Gen Accelerator programme:

• Darwin Blanch
• Petr Brunclík

The following players received entry into the singles main draw as alternates:

• Lautaro Midón
• Genaro Alberto Olivieri
• Colton Smith

The following players received entry from the qualifying draw:

• Laslo Djere
• Benjamin Hassan
• David Jordà Sanchis
• Tiago Torres
• Eero Vasa
• Zhang Zhizhen

Champions

Singles

Main article: 2026 Open de Oeiras II – Singles

• Laslo Djere def. Emilio Nava 6–3, 6–4.

Doubles

Main article: 2026 Open de Oeiras II – Doubles

• Siddhant Banthia / Alexander Donski def. Tiago Pereira / David Vega Hernández 6–3, 6–2.