| Competition: | Campeonato Brasileiro Série A |
| Season: | 1998 |
| Winners: | Corinthians 2nd Campeonato Brasileiro title 2nd Brazilian title |
| Relegated: | América-MG Goiás Bragantino América-RN |
| Continentalcup1: | Copa Libertadores |
| Continentalcup1 Qualifiers: | Corinthians Vasco da Gama(title holders) Palmeiras (Copa do Brasil champions) |
| Matches: | 297 |
| Total Goals: | 851 |
| League Topscorer: | Viola (21 goals) |
| Prevseason: | 1997 |
| Nextseason: | 1999 |
The 1998 Campeonato Brasileiro Série A was the 42nd edition of the Campeonato Brasileiro Série A, the top-level of professional football in Brazil.
It was contested by 24 teams, and Corinthians won the championship.
| Teams | Scores | ||||||
|---|---|---|---|---|---|---|---|
| Team 1 | Points | Team 2 | 1st leg | 2nd leg | 3rd leg | Agg. | |
| Cruzeiro | 6:3 | Palmeiras | 2:1 | 1:2 | 3:2 | 6:5 | |
| Portuguesa | 5:2 | Coritiba | 3:1 | 0:0 | 2:2 | 5:3 | |
| 3:6 | Santos | 3:1 | 1:2 | 0:3 | 4:6 | ||
| 3:6 | Corinthians | 0:1 | 2:0 | 0:1 | 2:2 | ||
| Teams | Scores | ||||||
|---|---|---|---|---|---|---|---|
| Team 1 | Points | Team 2 | 1st leg | 2nd leg | 3rd leg | Agg. | |
| Cruzeiro | 6:3 | Portuguesa | 3:1 | 1:2 | 1:0 | 5:3 | |
| 4:4 | Corinthians | 2:1 | 0:2 | 1:1 | 3:4 | ||
| Pos. | Scorer | Club | Goals[1] |
|---|---|---|---|
| 1 | Santos | 21 | |
| 2 |  Marcelinho Carioca | Corinthians | 19 |
| 3 | Fábio Júnior | Cruzeiro | 18 |
| Valdir | Atlético Mineiro | 18 | |
| 4 | Edílson | Corinthians | 15 |
| Leandro Amaral | Portuguesa | 15 | |
| 5 | Romário | Flamengo | 14 |
| Dejan Petković | Vitória | 14 |