| Club: | UD Logroñés |
| Season: | 2020–21 |
| Ownertitle: | Owner |
| Owner: | Félix Revuelta |
| Chrtitle: | President |
| Chairman: | Félix Revuelta |
| Mgrtitle: | Head coach |
| Manager: | Sergio Rodríguez |
| Stadium: | Estadio Las Gaunas |
| League: | Segunda División |
| League Result: | 20th (relegated) |
| Cup1: | Copa del Rey |
| Cup1 Result: | First round |
| League Topscorer: | Andy (8) |
| Season Topscorer: | Andy (8) |
| Pattern Name1: | Home |
| Pattern La1: | _logrones2021h |
| Pattern B1: | _logrones2021h |
| Pattern Ra1: | _logrones2021h |
| Pattern Sh1: | _logrones2021h |
| Pattern So1: | _logrones2021h |
| Leftarm1: | FF0000 |
| Body1: | FFFFFF |
| Rightarm1: | FF0000 |
| Shorts1: | 000000 |
| Socks1: | 000000 |
| Pattern Name2: | Away |
| Pattern La2: | _logrones2021a |
| Pattern B2: | _logrones2021a |
| Pattern Ra2: | _logrones2021a |
| Leftarm2: | 000000 |
| Body2: | 000000 |
| Rightarm2: | 000000 |
| Shorts2: | 000000 |
| Socks2: | 000000 |
| Pattern Name3: | Third |
| Pattern La3: | _logrones2021t |
| Pattern B3: | _logrones2021t |
| Pattern Ra3: | _logrones2021t |
| Leftarm3: | 0000FF |
| Body3: | 0000FF |
| Rightarm3: | 0000FF |
| Shorts3: | 0000FF |
| Socks3: | 0000FF |
| Prevseason: | 2019–20 |
| Nextseason: | 2021–22 |
The 2020–21 season was Unión Deportiva Logroñés's 12th season in existence and the club's first season ever in the second division of Spanish football. In addition to the domestic league, UD Logroñés participated in this season's edition of the Copa del Rey. The season covered the period from 21 July 2020 to 30 June 2021.
See main article: UD Logroñés B.
| scope=col | Player | Transferred from | scope=col; style="width: 65px;" | Fee | scope=col | Date | scope=col | Source | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | TBD |
| scope=col | Player | Transferred to | scope=col; style="width: 65px;" | Fee | scope=col | Date | scope=col | Source | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | TBD |
See main article: 2020–21 Segunda División.
The league fixtures were announced on 31 August 2020.[2] [3]
See main article: 2020–21 Copa del Rey.