| Season | 2021 |
|---|---|
| Champions | IFK Värnamo |
| Promoted | IFK Värnamo GIF Sundsvall Helsingborgs IF |
| Relegated | Akropolis IF GAIS Vasalunds IF Falkenbergs FF |
| Matches played | 240 |
| Goals scored | 612 (2.55 per match) |
| Top goalscorer | Ajdin Zeljkovic (18 goals) |
| Biggest home win | Jönköping 5–1 Vasalund (11 April 2021) Eskilstuna 4–0 Örgryte (25 July 2021) Helsingborg 4–0 Falkenberg (27 July 2021) Trelleborg 4–0 Eskilstuna (26 October 2021) |
| Biggest away win | Västerås 0–4 Helsingborg (18 July 2021) |
| Highest scoring | Vasalund 3–4 GAIS (29 August 2021) Falkenberg 3–4 Eskilstuna (7 November 2021) |
| Longest winning run | 5 matches Landskrona BoIS GIF Sundsvall[1] |
| Longest unbeaten run | 12 matches Östers IF |
| Longest winless run | 11 matches Jönköpings Södra IF |
| Longest losing run | 4 matches GAIS Vasalunds IF |
| Highest attendance | 7,881 GAIS 2–1 Örgryte IS (29 September 2021) |
← 2020 2022 → | |
The 2021 Superettan was part of the 2021 Swedish football season, and the 22nd season of Superettan, Sweden's second-tier football division in its current format. A total of 16 teams contested the league.