| Season: | 1998 |
| League Topscorer: | Gauchinho (XV de Piracicaba) - 13 |
| Biggest Home Win: | XV de Piracicaba 6-0 Ceará (September 6, 1998) |
| Nextseason: | Série B 1999 |
The football (soccer) Campeonato Brasileiro Série B 1998, the second level of Brazilian National League, was played from August 2 to December 20, 1998. The competition had 24 clubs and two of them were promoted to Série A and six were relegated to Série C. The competition was won by Gama.
Gama finished the final phase group with the most points, and was declared 1999 Brazilian Série B champions, claiming the promotion to the 1999 Série A along with Botafogo-SP, the runners-up. The six worst ranked teams in the first round (Fluminense, Atlético-GO, Náutico, Juventus, Volta Redonda and Americano) were relegated to play Série C in 1999.
| Team | City | Stadium | 1997 Season |
|---|---|---|---|
| 14th in Série B | |||
| 13th in Série B | |||
| 16th in Série B | |||
| 23rd in Série A | |||
| 17th in Série B | |||
| 9th in Série B | |||
| 5th in Série B | |||
| 24th in Série A | |||
| 12th in Série B | |||
| 25th in Série A | |||
| 7th in Série B | |||
| 6th in Série B | |||
| 2nd in Série C | |||
| 10th in Série B | |||
| 3rd in Série B | |||
| 11th in Série B | |||
| 18th in Série B | |||
| 20th in Série B | |||
| 1st in Série C | |||
| 8th in Série B | |||
| 26th in Série A | |||
| 4th in Série B | |||
| 19th in Série B | |||
| 15th in Série B | |||
| Teams | Scores | ||||||
|---|---|---|---|---|---|---|---|
| Team 1 | Points | Team 2 | 1st leg | 2nd leg | 3rd leg | Agg. | |
| Gama | 6:0 | Remo | 1:0 | 4:1 | — | 5:1 | |
| 4:4 | Botafogo-SP | 2:1 | 0:2 | 0:0 | 2:3 | ||
| 2:5 | Joinville | 3:3 | 0:3 | 0:0 | 3:6 | ||
| 1:7 | Desportiva | 1:1 | 0:2 | 1:3 | 2:6 | ||
| 3:3 | Londrina1 | 0:0 | 0:0 | 1:1 | 1:1 | ||
| 1:7 | Criciúma | 1:1 | 0:3 | 0:2 | 1:6 | ||
| 4:4 | XV de Piracicaba | 1:0 | 0:0 | 0:2 | 1:2 | ||
| Paysandu | 7:1 | Santa Cruz | 2:0 | 0:0 | 2:1 | 4:1 | |
1 Londrina qualified after defeating ABC on a penalty shoot-out.