2026 Oeiras Indoors II

Country	Player	Rank1	Seed
DEN	Elmer Møller	119	1
LTU	Vilius Gaubas	129	2
ESP	Martín Landaluce	149	3
POR	Jaime Faria	151	4
POR	Henrique Rocha	158	5
AUT	Jurij Rodionov	167	6
HUN	Zsombor Piros	170	7
CZE	Zdeněk Kolář	176	8

• ¹ Rankings are as of 19 January 2026.^[1]

The following players received wildcards into the singles main draw:

• Gastão Elias
• Martín Landaluce
• Tiago Torres

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

• Petr Brunclík

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

• Tiago Pereira
• Patrick Zahraj

The following players received entry from the qualifying draw:

• Andrés Andrade
• Diego Dedura
• Mathys Erhard
• Mikhail Kukushkin
• Iñaki Montes de la Torre
• Mats Rosenkranz

The following player received entry as a lucky loser:

• Adrià Soriano Barrera

• Chris Rodesch def. Daniil Glinka 6–3, 7–5.

• Filip Duda / Zdeněk Kolář def. Erik Grevelius / Adam Heinonen 6–3, 6–4.