2020–21 Charlton Athletic F.C. season

The 2020–21 Charlton Athletic season was the club's 115th season in their existence, having been founded in 1905, and was their first back in League One following relegation from the Championship. Along with competing in League One, the club also participated in the FA Cup, EFL Cup and the EFL Trophy. The season covered the period from 1 August 2020 to 30 June 2021.

Squad statistics

 * }

Matches
The 2020–21 season fixtures were released on Friday 21 August 2020.

FA Cup
The draw for the first round was made on Monday 26, October.

EFL Cup
The first round draw was made on 18 August, live on Sky Sports, by Paul Merson. The draw for both the second and third round were confirmed on September 6, live on Sky Sports by Phil Babb.

EFL Trophy
The regional group stage draw was confirmed on 18 August.