2004 Copa Sudamericana
The 2004 Copa Nissan Sudamericana was the 3rd edition of CONMEBOL's secondary international football tournament. It was won by Argentine club Boca Juniors, who defeated Bolívar of Bolivia to win their first title.
First stage
Argentina Preliminary
!colspan="5"|Argentina 3A Preliminary!colspan="5"|Argentina 4A Preliminary
Brazil Preliminary
First round
!colspan="5"|Brazil 1A Preliminary!colspan="5"|Brazil 2A Preliminary
!colspan="5"|Brazil 3A Preliminary
!colspan="5"|Brazil 4A Preliminary
Second round
!colspan="5"|Brazil 5A Preliminary!colspan="5"|Brazil 6A Preliminary
!colspan="5"|Brazil 7A Preliminary
!colspan="5"|Brazil 8A Preliminary
Ecuador/Cienciano/Venezuela Preliminary
First round
!colspan="5"|Venezuela PreliminarySecond round
!colspan="5"|Venezuela/Cienciano Preliminary!colspan="5"|Ecuador Preliminary
Chile/Bolivia Preliminary
!colspan="5"|Chile Preliminary!colspan="5"|Bolivia Preliminary
Colombia/Peru Preliminary
!colspan="5"|Colombia Preliminary!colspan="5"|Peru Preliminary
Paraguay/Uruguay Preliminary
!colspan="5"|Paraguay Preliminary!colspan="5"|Uruguay Preliminary
Second stage
Argentina Zone
!colspan="5"|Quarterfinalist 4!colspan="5"|Quarterfinalist 6
Brazil Zone
!colspan="5"|Quarterfinalist 2!colspan="5"|Quarterfinalist 7