| Competition: | Süper Lig |
| Season: | 2004–05 |
| Winners: | Fenerbahçe 16th title |
| Relegated: | Sakaryaspor İstanbulspor Akçaabat Sebatspor |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Fenerbahçe Trabzonspor |
| Continentalcup2: | UEFA Cup |
| Continentalcup2 Qualifiers: | Galatasaray Beşiktaş |
| Continentalcup3: | Intertoto Cup |
| Continentalcup3 Qualifiers: | Ankaraspor |
| Matches: | 306 |
| Total Goals: | 901 |
| League Topscorer: | Fatih Tekke (31 goals) |
| Biggest Home Win: | Fenerbahçe 7–0 Kayserispor |
| Biggest Away Win: | Akçaabat Sebatspor 0–5 Gençlerbirliği İstanbulspor 0–5 Trabzonspor |
| Highest Scoring: | MKE Ankaragücü 2–7 Sakaryaspor |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
The 2004–05 Süper Lig was 47th edition of Turkish league and 4th edition of Turkish Super League. Fenerbahçe won their 16th title, being 3 points ahead Trabzonspor and 4 points ahead Galatasaray. In the final fixture, Diyarbakırspor were 1 point behind Sakaryaspor. Malatyaspor and Diyarbakırspor are rivals, but Malatyaspor, defeating 4-2 Sakaryaspor at home, allowed Diyarbakırspor to remain, winning 1-0 away over Samsunspor. Galatasaray won the Cup, beating rivals Fenerbahçe with 5-1.
