74 teams from 49 UEFA member associations participated in the 2005–06 UEFA Champions League. The 2005–06 competition was the 3rd season with 16 team knockout stage. As current UEFA Champions League titleholder, Liverpool automatically qualify for this season's competition. As they did not finish in the top 4 in the 2004-05 Premier League, Liverpool had to enter from the 1st Qualifying Round.
The 2005-06 competition had 3 qualification rounds to reach the group stage.
The 23 lower tier domestic champions and current champions, Liverpool played a home and away knockout round.
The 12 winners from 1st Qualifying join 16 additional teams, playing a home and away knockout round.
The 14 winners from 2nd Qualifying join the remaining 18 teams, playing a home and away knockout round .
|New teams|| Teams in |
|1st Qualifying||24 teams >>>||24 teams|
|2nd Qualifying|| 16 teams >>> || 12 winners from 1st Qualifying |
16 new teams
|3rd Qualifying|| 18 teams >>> || 14 winners from 2nd Qualifying |
18 new teams
|Group Stage|| 16 teams >>> || 16 winners from 3rd Qualifying |
16 new teams
The 16 winners from the 3rd Qualifying Round joined with the 16 automatic qualifying teams to form 8 groups of 4 teams, playing a home and away series.
The top 2 in each group advanced to the knockout stage.