The 2020–21 ISU Challenger Series was scheduled to be held from September 9 to December 5, 2020. It was the seventh season that the ISU Challenger Series, a group of senior-level international figure skating competitions ranked below the ISU Grand Prix, was held. Originally a series of ten events, the 2020–21 Challenger Series featured only two individual events, with six events cancelled and two postponed to an unknown future date due to the COVID-19 pandemic.