| Tourney Name: | Copa Libertadores de América |
| Year: | 1998 |
| Other Titles: | Libertadores 1998 |
| Dates: | 25 February – 26 August |
| Num Teams: | 23 |
| Associations: | 11 |
| Champion Other: |  Vasco da Gama |
| Count: | 1 |
| Second Other: |  Barcelona |
| Matches: | 98 |
| Goals: | 220 |
| Prevseason: | 1997 |
| Nextseason: | 1999 |
The 1998 edition of the Copa Libertadores was the 39th in the tournament's history. It was held between February 25 and August 26. Mexican clubs participated in Copa Libertadores for the first time.[1] Vasco da Gama won the cup for the first time in the tournament's history, after defeating Barcelona of Ecuador in the final.
See main article: 1998 Copa Libertadores group stage.
First leg matches were played on April 15, April 22 and April 23. Second leg matches were on April 29, April 30, May 2 and May 7.
First leg matches were played on May 3, May 13 and May 20. Second leg matches were played on May 6 and May 27.
First leg matches were played on July 16. Second leg matches were played on July 22.
See main article: 1998 Copa Libertadores Finals.
First leg match was played on August 12. Second leg match was played on August 26.