| Season: | 1938–39 |
| League Result: | 3rd |
| Cup1 Result: | 1st |
| Cup2 Result: | did not participate |
| League Topscorer: | Bülent Ediz (9) |
| Season Topscorer: | Cemil Gürgen Erlertürk (17) |
| Pattern B1: | _gal1925-1940 |
| Pattern So1: | _rclens0607h |
| Leftarm1: | FFD900 |
| Rightarm1: | C80815 |
| Socks1: | 000000 |
| Pattern La2: | _Galatasarary1930sawayleftarms |
| Pattern B2: | _Galatasaray1930saway |
| Pattern Ra2: | _Galatasarary1930sawayrightarms |
| Pattern So2: | _blackyellowhorizontalstripe |
| Socks2: | 000000 |
The 1938–39 season was Galatasaray SK's 35th in existence and the club's 27th consecutive season in the Istanbul Football League.
| No. | Pos. | Name | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Apps | Goals | Apps | Goals | Apps | Goals | |||||
| align="left" | - | GK |  Fazıl Peker | 4 | 0 | 0 | 0 | 4 | 0 | |
| align="left" | - | GK | Osman İncili | 7 | 0 | 13 | 0 | 20 | 0 | |
| align="left" | - | GK | Sacit Öget | 5 | 0 | 0 | 0 | 5 | 0 | |
| align="left" | - | DF | Salim Şatıroğlu | 7 | 8 | 1 | 0 | 7 | 8 | |
| align="left" | - | DF | Lütfü Aksoy | 16 | 0 | 1 | 0 | 17 | 0 | |
| align="left" | - | DF | Faruk Barlas | 0 | 0 | 11 | 0 | 11 | 0 | |
| align="left" | - | DF | Adnan İncirmen | 13 | 0 | 12 | 0 | 25 | 0 | |
| align="left" | - | DF | Osman Alyanak | 1 | 0 | 0 | 0 | 1 | 0 | |
| align="left" | - | MF | Celal Kibarer | 7 | 0 | 6 | 0 | 13 | 0 | |
| align="left" | - | MF | Musa Sezer | 11 | 0 | 13 | 1 | 24 | 1 | |
| align="left" | - | MF | Yusuf Bahadır | 0 | 0 | 10 | 0 | 10 | 0 | |
| align="left" | - | MF | Ekrem Kapman | 16 | 0 | 2 | 0 | 18 | 0 | |
| align="left" | - | MF | Rıza Köprülü | 0 | 0 | 6 | 0 | 6 | 0 | |
| align="left" | - | FW | Murat Poyraz | 0 | 0 | 4 | 0 | 4 | 0 | |
| align="left" | - | FW | Danyal Vuran | 1 | 0 | 0 | 0 | 1 | 0 | |
| align="left" | - | FW | Mehmet Yılmaz | 7 | 3 | 0 | 0 | 7 | 3 | |
| align="left" | - | FW | Bülent Ediz | 9 | 9 | 0 | 0 | 9 | 9 | |
| align="left" | - | FW | Bedii Etingü | 15 | 1 | 12 | 1 | 27 | 2 | |
| align="left" | - | FW | Nubar Hamamcıyan | 3 | 0 | 0 | 0 | 3 | 0 | |
| align="left" | - | FW | Süleyman Tekil | 12 | 6 | 3 | 2 | 15 | 8 | |
| align="left" | - | FW | Boduri | 5 | 1 | 13 | 11 | 18 | 12 | |
| align="left" | - | FW | Necdet Cici | 14 | 6 | 5 | 2 | 19 | 8 | |
| align="left" | - | FW | Sarafim Madenli | 4 | 2 | 10 | 4 | 14 | 6 | |
| align="left" | - | FW | Eşfak Aykaç | 8 | 3 | 0 | 0 | 8 | 3 | |
| align="left" | - | FW | Selahattin Almay | 3 | 1 | 12 | 5 | 15 | 9 | |
| align="left" | - | FW | Sabri Gençay | 2 | 0 | 0 | 0 | 2 | 0 | |
| align="left" | - | FW | Cemil Gürgen Erlertürk | 6 | 4 | 8 | 13 | 14 | 17 | |
See main article: 1938–39 Istanbul Football League.
Kick-off listed in local time (EEST)
See main article: 1939 Turkish National Division.
Kick-off listed in local time (EEST)
Galatasaray SK won the cup on goal difference over Fenerbahçe SK.
Galatasaray SK won 2 cups beating Fenerbahçe SK twice.