2021 Maia Challenger II

Country	Player	Rank1	Seed
SVK	Andrej Martin	120	1
BEL	Kimmer Coppejans	207	2
FRA	Maxime Janvier	219	3
POR	Gastão Elias	227	4
POR	Nuno Borges	228	5
POR	João Domingues	248	6
TPE	Tseng Chun-hsin	256	7
POR	Gonçalo Oliveira	284	8

• ¹ Rankings are as of 6 December 2021.^[1]

The following players received wildcards into the singles main draw:

• Pedro Araújo
• Tiago Cação
• Fábio Coelho

The following player received entry into the singles main draw as a special exempt:

• Oleg Prihodko

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

• Elliot Benchetrit
• Oleksii Krutykh
• Oriol Roca Batalla

The following players received entry from the qualifying draw:

• Elmar Ejupovic
• Edoardo Lavagno
• Luca Potenza
• Damien Wenger

• Tseng Chun-hsin def. Nuno Borges 5–7, 7–5, 6–2.

• Nuno Borges / Francisco Cabral def. Piotr Matuszewski / David Pichler 6–4, 7–5.