BK Häcken were the defending champions after winning the title in the previous season.
IF Brommapojkarna and Halmstads BK were promoted after finishing first and second in the 2022 Superettan, while Varbergs BoIS staved off relegation by defeating third placed Östers IF.
The 2023 Allsvenskan season began on 1 April, and ended on 12 November 2023 (not including play-off matches).
Note: Flags indicate national team as has been defined under FIFA eligibility rules.
AIK Fotboll drew the highest average home attendance in the 2023 edition of the Swedish top-flight football league.