Allsvenskan (Swedish pronunciation: [ˈâlːˌsvɛnːskan]; lit. 'the All-Swedish'), also known as Fotbollsallsvenskan ([ˈfûːtbɔlsˌalːsvɛnskan], lit. 'the All-Swedish Football') is a professional association football league in Sweden and the highest level of the Swedish football league system.

Founded in 1924, it operates on a system of promotion and relegation with Superettan, the second highest league in the Swedish men's football league system. Seasons run from late March or early April to the beginning of November, with the 16 clubs all meeting each other twice, resulting in a 30-match season, for a total of 240 matches league-wide.

Allsvenskan is ranked 23rd in the UEFA coefficients of leagues based on performances in European competitions over the last five years. The current champions are Mjällby AIF, who won the title in the 2025 season.

The three teams with most Swedish championships are Malmö FF (24), IFK Göteborg (18) and IFK Norrköping (13), all of which are still playing as of 2024.

Including the 2024 season, Allsvenskan has been running for an unbroken streak of 100 seasons^[update]. Unlike other European football leagues, the Allsvenskan did not experience an interruption in play during World War II due to Swedish neutrality.

In the 1910s, national league play had been tried in Sweden with Svenska Serien, however it turned out it was hard to finance the play. Svenska Serien evolved into two series, consisting of a southern and northern group.

On 13 January 1924, football clubs met in Stockholm to found a nationwide series and on 3 August later in the year the opening game was played of the 1924–25 Allsvenskan. The first winner of the one-league twelve team Allsvenskan was GAIS. In 1931, the league started to decide the Swedish football champions.

In the early years, Norrland and Gotland teams were not allowed to play on higher levels in the league system, which was gradually changed to include the Norrland and Gotland teams on higher levels.