| Club: | CD Leganés |
| Season: | 2020–21 |
| Chrtitle: | President |
| Chairman: | María Victoria Pavón |
| Mgrtitle: | Head coach |
| Manager: | José Luis Martí |
| Stadium: | Estadio Municipal de Butarque |
| League: | Segunda División |
| League Result: | 3rd |
| Cup1: | Play-offs |
| Cup1 Result: | Semi-finals |
| Cup2: | Copa del Rey |
| Cup2 Result: | Round of 32 |
| League Topscorer: | Sabin Merino (9) |
| Season Topscorer: | Sabin Merino (9) |
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| Prevseason: | 2019–20 |
| Nextseason: | 2021–22 |
The 2020–21 CD Leganés season was the club's 92nd season in existence and the first season back in the second division of Spanish football. In addition to the domestic league, Leganés participated in this season's edition of the Copa del Rey. The season covered the period from 20 July 2020 to 30 June 2021.
See main article: CD Leganés B.
See main article: 2020–21 Segunda División.
The league fixtures were announced on 31 August 2020.[1] [2]
See main article: 2020–21 Copa del Rey.
| width=15 | width=15 | width=15 | width=15 | width=145 | Name | width=120 | Segunda División | width=100 | Copa del Rey | width=80 | Total | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 9 | FW |  | Sabin Merino | 9 | 0 | 9 | ||||||||
| 2 | 10 | FW | | José Arnaiz | 6 | 0 | 6 | ||||||||
| 29 | FW | | Miguel de la Fuente | 5 | 1 | 6 | |||||||||
| 4 | 11 | FW | | Juan Muñoz | 5 | 0 | 5 | ||||||||
| 24 | FW | | Borja Bastón | 5 | 0 | 5 | |||||||||
| 22 | MF | Kevin Bua | 4 | 1 | 5 | ||||||||||
| 7 | 25 | MF | | Rubén Pardo | 4 | 0 | 4 | ||||||||
| 8 | 18 | MF | | Robert Ibáñez | 3 | 0 | 3 | ||||||||
| 28 | DF | | Javi Hernández | 3 | 0 | 3 | |||||||||
| 10 | 8 | MF |  | Gaku Shibasaki | 2 | 0 | 2 | ||||||||
| 6 | DF | | Sergio González | 1 | 1 | 2 | |||||||||
| 12 | 4 | DF |  | Kenneth Omeruo | 1 | 0 | 1 | ||||||||
| 16 | DF |  | Roberto Rosales | 1 | 0 | 1 | |||||||||
| Own goals | 2 | 0 | 2 | ||||||||||||
| Totals | 51 | 3 | 54 | ||||||||||||