Founded in 1905, the 2019–20 season was Charlton Athletic's 114th season in their existence. Along with competing in the Championship, the club also participated in the FA Cup and EFL Cup. The season covered the period from 1 July 2019 to 31 July 2020. Due to the COVID-19 pandemic in the United Kingdom, the Championship season was stopped after game 37 until further notice. However, on 31 May 2020, the EFL agreed to a provisional restart date of the weekend of 20 June 2020 for the 2019/20 Championship season.