| Season: | 1988–89 |
| League Result: | 3rd |
| Cup1 Result: | 1/4 Final |
| Cup2 Result: | Semi Final |
| League Topscorer: | Tanju Çolak (27) |
| Season Topscorer: | Tanju Çolak (38) |
| Highest Attendance: | 60,000 vs AS Monaco (European Cup, 15 March 1989) |
| Lowest Attendance: | 5,848 vs Ayvalıkgücü (Turkish Cup, 1 February 1989) |
| Average Attendance: | 19,034 |
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The 1988–89 season was Galatasaray's 85th in existence and the 31st consecutive season in the 1. Lig. This article shows statistics of the club's players in the season, and also lists all matches that the club have played in the season.
| No. | Pos. | Name | Turkish Cup | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | ||||
| align="left" | - | GK | Zoran Simović | 30 | 1 | 6 | 0 | 8 | 0 | 44 | 1 |
| align="left" | - | GK |  Hayrettin Demirbaş | 6 | 0 | 0 | 0 | 0 | 0 | 6 | 0 |
| align="left" | - | DF | Semih Yuvakuran | 32 | 1 | 4 | 1 | 8 | 0 | 44 | 2 |
| align="left" | - | DF | Cüneyt Tanman (C) | 34 | 1 | 6 | 1 | 8 | 2 | 48 | 4 |
| align="left" | - | DF | İsmail Demiriz | 26 | 2 | 6 | 0 | 8 | 0 | 40 | 2 |
| align="left" | - | DF | İhsan Okay | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| align="left" | - | DF | Bülent Korkmaz | 10 | 0 | 1 | 0 | 7 | 0 | 18 | 0 |
| align="left" | - | DF | Yusuf Altıntaş | 20 | 3 | 5 | 0 | 5 | 0 | 30 | 3 |
| align="left" | - | DF | Erhan Önal | 26 | 1 | 6 | 0 | 6 | 0 | 38 | 1 |
| align="left" | - | MF | Savaş Koç | 29 | 5 | 5 | 1 | 5 | 0 | 39 | 6 |
| align="left" | - | MF | Muhammet Altıntaş | 12 | 0 | 0 | 0 | 3 | 0 | 15 | 0 |
| align="left" | - | MF | Tugay Kerimoğlu | 16 | 0 | 4 | 0 | 1 | 0 | 21 | 0 |
| align="left" | - | MF | Savaş Demiral | 21 | 0 | 1 | 0 | 6 | 1 | 28 | 1 |
| align="left" | - | MF | Metin Yıldız | 20 | 0 | 1 | 1 | 4 | 0 | 25 | 1 |
| align="left" | - | MF | Arif Kocabıyık | 20 | 1 | 2 | 0 | 5 | 0 | 27 | 1 |
| align="left" | - | MF | Xhevat Prekazi | 28 | 3 | 5 | 0 | 8 | 1 | 41 | 4 |
| align="left" | - | FW | İlyas Tüfekçi | 19 | 5 | 2 | 0 | 3 | 0 | 24 | 5 |
| align="left" | - | FW | Mirsad Kovačević | 30 | 12 | 5 | 1 | 5 | 0 | 40 | 13 |
| align="left" | - | FW | Tanju Çolak | 34 | 27 | 5 | 6 | 6 | 5 | 45 | 38 |
| align="left" | - | FW | Uğur Tütüneker | 32 | 9 | 5 | 4 | 7 | 2 | 44 | 15 |
| DF | Raşit Çetiner | 32 | career end | |
| FW | 34 | Stade Vallauris | ||
| FW | Erkan Ültanır (on loan) | 24 | Bursaspor | |
See main article: 1988–89 1.Lig.
Kick-off listed in local time (EET)
See main article: 1988–89 European Cup.
Kick-off listed in local time (EET)
| Competition | Av. Att. | Total Att. |
|---|---|---|
| 1. Lig | 19,034 | 342,620 |
| Turkish Cup | 12,940 | 38,820 |
| European Cup | 37,993 | 151,973 |
| Total | 21,337 | 533,413 |