2021 Superettan

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.

Teams
A total of 16 teams contested the league. The top two teams qualified directly for promotion to Allsvenskan, the third entered a play-off for the chance of promotion. The two bottom teams were automatically relegated, while the 13th and 14th placed teams competed in a play-off to determine whether they are relegated.

Relegation play-offs
The 13th-placed and 14th-placed teams of Superettan met the two runners-up from 2021 Division 1 (Norra and Södra) in two-legged ties on a home-and-away basis with the teams from Superettan finishing at home.

Skövde AIK won 3–0 on aggregate and are promoted.

Dalkurd FF won 3–2 on aggregate and are promoted.

Player

 * Most yellow cards: 10
 * 🇸🇪 Filip Tronêt (Västerås SK)


 * Most red cards: 3
 * 🇸🇪 Filip Almström Tähti (Västerås SK)

Club

 * Most yellow cards: 75
 * AFC Eskilstuna


 * Most red cards: 4
 * AFC Eskilstuna
 * Landskrona BoIS