2003 Copa Sudamericana
The 2003 Copa Nissan Sudamericana was the second edition of CONMEBOL's new international club tournament. It was won by Peruvian club Cienciano, who won the first international trophy for their club and the country. They also qualified to play in the 2004 Recopa Sudamericana.!colspan="5"|Argentina III Preliminary
!colspan="5"|Argentina IV PreliminaryBrazil 1 Preliminary
Brazil 2 Preliminary
Brazil 3 Preliminary
Brazil 4 Preliminary
Venezuela/Bolivia/2002 Champion Preliminary
!colspan="5"|Venezuela PreliminarySecond round
!colspan="5"|Venezuela/San Lorenzo Preliminary
!colspan="5"|Bolivia PreliminaryPeru/Chile Preliminary
!colspan="5"|Chile Preliminary
!colspan="5"|Peru PreliminaryColombia/Ecuador Preliminary
!colspan="5"|Colombia Preliminary
!colspan="5"|Ecuador PreliminaryParaguay/Uruguay Preliminary
!colspan="5"|Paraguay Preliminary
!colspan="5"|Uruguay PreliminaryArgentina Zone
!colspan="5"|Quarterfinalist 4
!colspan="5"|Quarterfinalist 8Brazil Zone
!colspan="5"|Quarterfinalist 2
!colspan="5"|Quarterfinalist 5Venezuela/Bolivia/2002 Champion Zone
!colspan="5"|Quarterfinalist 6Peru/Chile Zone
!colspan="5"|Quarterfinalist 1Colombia/Ecuador Zone
!colspan="5"|Quarterfinalist 3Paraguay/Uruguay Zone
!colspan="5"|Quarterfinalist 7Bracket
Quarterfinals
Semifinals
Finals
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