| Club: | LB Châteauroux |
| Season: | 2020–21 |
| Chrtitle: | Chairman |
| Chairman: | Michel Denisot |
| Mgrtitle: | Manager |
| Manager: | Nicolas Usaï (until 13 December) Benoît Cauet (from 1 January to 10 March) Marco Simone (from 10 March) |
| Stadium: | Stade Gaston Petit |
| League: | Ligue 2 |
| League Result: | 20th (relegated) |
| Cup1: | Coupe de France |
| Cup1 Result: | Eighth round |
| League Topscorer: | Romain Grange (6) |
| Season Topscorer: | Romain Grange (6) |
| Pattern La1: | _chateauroux1819h |
| Pattern B1: | _chateauroux1920h |
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| Shorts1: | 000055 |
| Socks1: | FF0000 |
| Pattern La2: | _rioave1819t |
| Pattern B2: | _chateauroux1920a |
| Pattern Ra2: | _rioave1819t |
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| Prevseason: | 2019–20 |
| Nextseason: | 2021–22 |
The 2020–21 LB Châteauroux season was the club's 105th season in existence and its club's fourth consecutive season in the second division of French football. In addition to the domestic league, Châteauroux participated in this season's edition of the Coupe de France. The season covered the period from 1 July 2020 to 30 June 2021.
See main article: 2020–21 Ligue 2.
The league fixtures were announced on 9 July 2020.[1]
See main article: 2020–21 Coupe de France.