The qualifying round of the 2002–03 UEFA Cup was contested from 13 to 29 August 2002.
The team that scored more goals on aggregate over the two legs advanced to the next round.
If the aggregate score was level, the away goals rule was applied, i.e., the team that scored more goals away from home over the two legs advanced.
If away goals were also equal, then thirty minutes of extra time were played, divided into two fifteen-minute halves.
The away goals rule was again applied after extra time, i.e., if there were goals scored during extra time and the aggregate score was still level, the visiting team advanced by virtue of more away goals scored.
If no goals were scored during extra time, the tie was decided by penalty shoot-out.
[1] A total of 82 teams from 44 national associations were involved in the qualifying round, including three teams that qualified via the Fair Play ranking (FP).
[2][3] Below are the participating teams, sorted by their 2002 UEFA club coefficient (in parentheses).
Notes The draw was held on 21 June 2002 in Geneva.
The first team to be drawn played the first leg at home.
Zenit Saint Petersburg won 13–0 on aggregate.