2024 Oeiras Indoors II

Country	Player	Rank1	Seed
ESP	Alejandro Moro Cañas	243	1
POR	Henrique Rocha	246	2
POR	João Sousa	249	3
GER	Oscar Otte	252	4
TUR	Cem İlkel	255	5
USA	Martin Damm	257	6
FRA	Maxime Janvier	258	7
SUI	Leandro Riedi	261	8

• ¹ Rankings are as of 1 January 2024.^[1]

The following players received wildcards into the singles main draw:

• João Domingues
• Jaime Faria
• Tiago Pereira

The following players received entry into the singles main draw using protected rankings:

• Nicolás Álvarez Varona
• Paul Jubb

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

• Gastão Elias
• Maks Kaśnikowski

The following players received entry from the qualifying draw:

• Marius Copil
• Sebastian Fanselow
• Aidan McHugh
• Elmer Møller
• Samuel Vincent Ruggeri
• Michael Vrbenský

The following player received entry as a lucky loser:

• Dan Added

• Leandro Riedi def. Martin Damm 7–6^(8–6), 6–2.

• Karol Drzewiecki / Piotr Matuszewski def. Arjun Kadhe / Marcus Willis 6–3, 6–4.