| Competition: | Campeonato Gaúcho |
| Season: | 1990 |
| Winners: | Grêmio |
| Relegated: | Aimoré Novo Hamburgo |
| Continentalcup1: | Copa do Brasil |
| Continentalcup1 Qualifiers: | Grêmio Caxias |
| Continentalcup2: | Série B |
| Continentalcup2 Qualifiers: | Juventude Caxias |
| League Topscorer: | Nílson (Internacional) – 22 goals |
| Biggest Home Win: | Grêmio 6-0 Novo Hamburgo (March 24, 1990) |
| Biggest Away Win: | Lajeadense 0-4 Juventude (March 25, 1990) Aimoré 1-5 Grêmio (May 20, 1990) |
| Highest Scoring: | Grêmio 6-0 Novo Hamburgo (March 24, 1990) Caxias 4-2 Grêmio (May 1, 1990) Pelotas 5-1 Lajeadense (May 9, 1990) Aimoré 1-5 Grêmio (May 20, 1990) Aimoré 4-2 Passo Fundo (June 3, 1990) |
| Matches: | 195 |
| Total Goals: | 404 |
| Prevseason: | 1989 |
| Nextseason: | 1991 |
The 70th season of the Campeonato Gaúcho kicked off on February 4, 1990 and ended on July 29, 1990. Fourteen teams participated. Holders Grêmio won their 28th title. Aimoré and Novo Hamburgo were relegated.[1] [2]
The championship would have three stages:
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Two state cups, the Copa Cidade de Porto Alegre and the Copa Aneron Corrêa de Oliveira were slated to be disputed in the first semester of 1991 by the Second-level teams - the former for the clubs from the south of the state and the Porto Alegre region, and the latter for the clubs of the north of the state. However, once it was decided that the First level would be expanded to twenty clubs in 1991, these cups also became qualifiers for the first level.[3]
In the Copa Cidade de Porto Alegre, the seventeen clubs were divided into two groups, one with eight and other with nine teams, in which the teams in a group played each other in a double round-robin format, with the two teams with the most points qualifying to the 1991 First level and to the Semifinals, the winners of which played each other to define the champions.
In the Copa Aneron Corrêa, the fifteen clubs were divided into two groups, one with eight and other with seven teams, in which the teams in a group played each other in a double round-robin format, with the four teams with the most points qualifying to the Second phase. In the second phase, the qualified teams in each group would play each other in a double round-robin format once more, with the best team of each group qualifying to the 1991 First level and to the Finals.
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