2021 Maia Challenger

The 2021 Maia Challenger was a professional tennis tournament played on clay courts. It was the third edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Maia, Portugal from 6 to 12 December 2021.

Seeds

 * 1 Rankings are as of 29 November 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * Pedro Araújo
 * Tiago Cação
 * Duarte Vale

The following players received entry into the singles main draw using protected rankings:
 * 🇲🇦 Elliot Benchetrit
 * 🇧🇪 Julien Cagnina

The following players received entry from the qualifying draw:
 * 🇮🇹 Lorenzo Bocchi
 * 🇪🇸 Miguel Damas
 * 🇩🇪 Oscar Moraing
 * 🇮🇹 Simone Roncalli

Singles

 * 🇫🇷 Geoffrey Blancaneaux def. Tseng Chun-hsin 3–6, 6–3, 6–2.

Doubles

 * Nuno Borges / Francisco Cabral def. 🇸🇰 Andrej Martin /  Gonçalo Oliveira 6–3, 6–4.