| Club: | Grêmio |
| Season: | 2021 |
| Manager: | Renato Portaluppi (until 15 April) Thiago Gomes (caretaker) (16 – 20 April, 4 – 8 July, 11 – 14 October) Tiago Nunes (from 21 April – until 4 July) Luiz Felipe Scolari (from 8 July – until 11 October) Vágner Mancini (since 14 October) |
| Chrtitle: | President |
| Chairman: | Romildo Bolzan Jr. |
| Stadium: | Arena do Grêmio |
| League: | Brasileiro Série A |
| League Result: | 17th |
| Cup1: | Campeonato Gaúcho |
| Cup1 Result: | Winners |
| Cup2: | Copa do Brasil |
| Cup2 Result: | Quarter-finals |
| Cup3: | CONMEBOL Libertadores |
| Cup3 Result: | Third stage |
| Cup4: | CONMEBOL Sudamericana |
| Cup4 Result: | Round of 16 |
| Cup5: | Recopa Gaúcha |
| Cup5 Result: | Winners |
| League Topscorer: | Diego Souza (10) |
| Season Topscorer: | Diego Souza (24) |
| Largest Win: | 8–0 vs. Aragua |
| Largest Loss: | 0–4 vs. Flamengo |
| Prevseason: | 2020 |
| Nextseason: | 2022 |
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The 2021 season is Grêmio Foot-Ball Porto Alegrense's 118th season in existence and the club's 16th consecutive season in the top flight of Brazilian football. In addition to the domestic league, Grêmio participates in this season's editions of the Copa do Brasil, the Campeonato Gaúcho, the Copa CONMEBOL Libertadores and the Copa CONMEBOL Sudamericana. The season covers the period from 1 March 2021 to 31 December 2021, a shorter season due to the COVID-19 pandemic.
See main article: 2021 Recopa Gaúcha.
See main article: 2021 Campeonato Gaúcho.
The first stage fixtures were announced on 21 December 2020.[1]
Note: Match numbers indicated on the left hand side are references to the matchday scheduled by the Campeonato Gaúcho and not the order matches were played after postponements and rescheduled matches.
See main article: 2021 Copa Libertadores.
See main article: 2021 Copa Libertadores qualifying stages. The draw for the qualifying stages was held on 5 February 2021, 12:00 .[2]
See main article: 2021 Copa Sudamericana.
See main article: 2021 Copa Sudamericana group stage. The draw for the group stage was held on 9 April 2021, 13:00, at the CONMEBOL Convention Centre in Luque, Paraguay.[3]
See main article: 2021 Copa Sudamericana final stages. The draw for the final stage was held on 1 June 2021, 13:00, at the CONMEBOL Convention Centre in Luque, Paraguay.[4]
See main article: 2021 Campeonato Brasileiro Série A.
The league fixtures were announced on 24 March 2021.[5]
Note: Match numbers indicated on the left hand side are references to the matchday scheduled by the Campeonato Brasileiro Série A and not the order matches were played after postponements and rescheduled matches.
See main article: 2021 Copa do Brasil.
The draw for the third round was held on 23 April 2021, 14:00, at the CBF headquarters in Rio de Janeiro.[6]
The draw for the round of 16 was held on 22 June 2021, 16:00, at the CBF headquarters in Rio de Janeiro.[7]
The draw for quarter-finals was held on 6 August 2021, 15:00, at the CBF headquarters in Rio de Janeiro.