2020–21 TFF 1. Lig
| Season | 2020–21 |
|---|---|
| Dates | 11 September 2020 – 9 May 2021 |
| Champions | Adana Demirspor |
| Promoted | Adana Demirspor Giresunspor Altay |
| Relegated | Akhisarspor Ankaraspor Eskişehirspor |
| Matches played | 306 |
| Goals scored | 854 (2.79 per match) |
| Top goalscorer | Marco Paixão (22 goals) |
| Biggest home win | Altay 6–0 Eskişehirspor (27 September 2020) Ankara Keçiörengücü 6–0 Akhisarspor (22 November 2020) |
| Biggest away win | Tuzlaspor 0–6 Bandırmaspor (22 November 2020) |
| Highest scoring | Altınordu 6–3 Eskişehirspor (4 April 2021) |
| Longest winning run | Giresunspor (12 matches) |
| Longest unbeaten run | Giresunspor (16 matches) |
| Longest winless run | Eskişehirspor (21 matches) |
| Longest losing run | Akhisarspor (8 matches) |
← 2019–20 2021–22 →
All statistics correct as of 10 May 2021. | |
The 2020–21 TFF 1. Lig was the 20th season since the league was established in 2001 and 58th season of the second-level football league of Turkey since its establishment in 1963–64. There was no relegation to or from the TFF First League the prior year due to the coronavirus pandemic.