2003–04 Olympiacos F.C. season

The club played their 7th consecutive season in the UEFA Champions League.

In the beginning of the summertime Olympiacos named Greek Nikos Alefantos coach.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Players may hold more than one non-FIFA nationality.

All times at CET Supplier: UmbroSponsor(s): Siemens Mobile Source: Olympiacos FC