2025 Clube Tenis Porto Challenger – Singles

Singles
2025 Clube Tenis Porto Challenger
Champion Guy den Ouden
Runner-up Gilles-Arnaud Bailly
Score6–4, 6–2

Adrian Andreev was the defending champion but chose not to defend his title.

Guy den Ouden won the title after defeating Gilles-Arnaud Bailly 6–4, 6–2 in the final.