| Competition: | 1.Lig |
| Season: | 1999–2000 |
| Winners: | Galatasaray 14th title |
| Relegated: | Altay Göztepe Vanspor |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Galatasaray Beşiktaş |
| Continentalcup2: | UEFA Cup |
| Continentalcup2 Qualifiers: | Gaziantepspor Antalyaspor |
| Continentalcup3: | Intertoto Cup |
| Continentalcup3 Qualifiers: | Kocaelispor |
| League Topscorer: | Serkan Aykut (30 goals) |
| Matches: | 306 |
| Total Goals: | 878 |
| Prevseason: | 1998–99 |
| Nextseason: | 2000–01 |
Statistics of Turkish First Football League in the 1999 - 2000 season.
It was contested by 18 teams, and Galatasaray S.K. won the championship. And demotion of Altay S.K., Göztepe A.Ş., Vanspor was decided.
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 | Serkan Aykut | Samsunspor | 30 |
| 2 | Ahmet Dursun | Beşiktaş | 21 |
| 3 | Fazlı Ulusal | Antalyaspor | 20 |
| 4 | Ümit Karan | Gençlerbirliği | 18 |
| Viorel Moldovan | Fenerbahçe | ||
| 6 | Cafer Aydın | Ankaragücü | 16 |
| Oktay Derelioğlu | Gaziantepspor | ||
| 8 | Ertuğrul Sağlam | Beşiktaş | 14 |
| Hakan Şükür | Galatasaray | ||
| 10 | Okan Yılmaz | Bursaspor | 13 |
| Roman Dąbrowski | Kocaelispor | ||
| Hami Mandıralı | Trabzonspor |