| Club: | Göztepe |
| Season: | 2020–21 |
| Chrtitle: | Chairman |
| Chairman: | Mehmet Sepil |
| Mgrtitle: | Manager |
| Manager: | İlhan Palut (until 10 January 2021) Ünal Karaman (from 20 January 2021) |
| Stadium: | Gürsel Aksel Stadium |
| League: | Süper Lig |
| League Result: | 9th |
| Cup1: | Turkish Cup |
| Cup1 Result: | Fifth round |
| League Topscorer: | Cherif Ndiaye (8) |
| Season Topscorer: | Cherif Ndiaye (10) |
| Pattern La1: | _goztepe2021h |
| Pattern B1: | _goztepe2021h |
| Pattern Ra1: | _goztepe2021h |
| Leftarm1: | FF0000 |
| Body1: | FF0000 |
| Rightarm1: | FF0000 |
| Shorts1: | FF0000 |
| Socks1: | FF0000 |
| Pattern La2: | _goztepe2021a |
| Pattern B2: | _goztepe2021a |
| Pattern Ra2: | _goztepe2021a |
| Leftarm2: | 000000 |
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| Prevseason: | 2019–20 |
| Nextseason: | 2021–22 |
The 2020–21 season is Göztepe S.K.'s 96th season in existence and the club's fourth consecutive season in the top flight of Turkish football. In addition to the domestic league, Göztepe will participate in this season's edition of the Turkish Cup. The season covers the period from July 2020 to 30 June 2021.
| scope=col | Player | Transferred from | scope=col; style="width: 65px;" | Fee | scope=col | Date | scope=col | Source | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | TBD |
| scope=col | Player | Transferred to | scope=col; style="width: 65px;" | Fee | scope=col | Date | scope=col | Source | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | TBD |
See main article: 2020–21 Süper Lig.
See main article: 2020–21 Turkish Cup.