The 2021 NBL–Pilipinas season, also known as the 2021 Chooks-to-Go NBL Chairman's Cup, is the fourth season of the National Basketball League (NBL) of the Philippines. It is also the first season of the NBL as a professional league as recognized by the Games and Amusement Board of the Philippine government. The inaugural pro league season opened on July 18, 2021 with 11 teams. However the league was suspended in July 30, 2021 due to stricter COVID-19 community quarantine imposed in Greater Manila. The NBL resumed play on September 18, 2021.