The 2020 Port Adelaide Football Club season was the club's 24th season in the Australian Football League (AFL) and the 150th year since its inception in 1870. The club would ordinarily have fielded its reserves team in the South Australian National Football League (SANFL), though was prevented from doing so as a result of the COVID-19 pandemic.
Port Adelaide's reserves team, known as the Magpies, had been fixtured for another season in the SANFL. In May 2020 however the AFL ordered all AFL-listed players not to play in any state league, preventing Port Adelaide from fielding their SANFL team for the 2020 season.