| Club: | Olympiacos |
| Season: | 2005–06 |
| Manager: | Trond Sollied |
| Chairman: | Sokratis Kokkalis |
| Stadium: | Karaiskakis Stadium, Piraeus |
| League: | Alpha Ethniki |
| League Result: | Winners |
| Cup1: | Greek Cup |
| Cup1 Result: | Winners |
| Cup2: | Champions League |
| Cup2 Result: | Group Stage |
| League Topscorer: | Predrag Đorđević (15) |
| Season Topscorer: | Predrag Đorđević (18) |
| Highest Attendance: | 33,500 vs Olympique Lyonnais (1 November 2005) |
| Pattern La1: | _olympiacosfc0506h |
| Pattern B1: | _olympiacosfc0506h |
| Pattern Ra1: | _olympiacosfc0506h |
| Pattern Sh1: | _olympiacosfc0506h |
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| Rightarm1: | F20D2F |
| Shorts1: | F20D2F |
| Socks1: | F20D2F |
| Pattern B2: | _olympiacosfc0506a |
| Pattern So2: | _olympiacosfc0506a |
| Leftarm2: | 000000 |
| Body2: | C0C0C0 |
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| Pattern B3: | _olympiacosfc0506t |
| Pattern Sh3: | _olympiacosfc0506t |
| Pattern So3: | _olympiacosfc0506t |
| Leftarm3: | FFFFFF |
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| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
The 2005–06 season was Olympiacos's 47th consecutive season in the Alpha Ethniki and their 80th year in existence. The club were played their 9th consecutive season in the UEFA Champions League. In the beginning of the summertime Olympiacos named Norwegian Trond Sollied coach.[1]
See main article: 2005–06 Alpha Ethniki.
All times at EET
See main article: 2005–06 Greek Football Cup.
See main article: 2005–06 UEFA Champions League.
All times at CET
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| Name | Pos. | Award | |
|---|---|---|---|
 Rivaldo | Attacking Midfielder |
| |
| Ieroklis Stoltidis | Central Midfielder |
| |
| Antonios Nikopolidis | Goalkeeper |
|