The qualifying rounds for the 2004–05 UEFA Champions League began on 13 July 2004. In total, there were three qualifying rounds which provided 16 clubs to join the group stage.
† Winners of the previous qualifying round whose identity was not known at the time of the draw. Teams in italics defeated a team with a higher coefficient in the previous qualifying round, thus effectively taking the coefficient of their defeated opponent in the draw for this round.
† Winners of the previous qualifying round whose identity was not known at the time of the draw. Teams in italics defeated a team with a higher coefficient in the previous qualifying round, thus effectively taking the coefficient of their defeated opponent in the draw for this round.
^The PAOK v Maccabi Tel Aviv first leg match originally finished 2–1 to Maccabi Tel Aviv, but was later awarded 3–0 against PAOK for fielding a suspended player.[1]
Note: In 1991–92, the competition was still known as the European Cup, but is included as it was the first to use a group stage format. In that season and 1992–93, there was no knockout phase between the group stage and final.