[1] Gustavus Adolphus Day is celebrated in Sweden on 6 November in memory of King Gustavus Adolphus of Sweden, who was killed on that date (old style) in 1632 at the Battle of Lützen in the Thirty Years' War.

[4] Today what remains is mainly the consumption of the Gustavus Adolphus pastry (Gustav Adolfsbakelse in Swedish) on this day, with a chocolate or marzipan relief of that king on top.

[6][7] In Estonia, which like Finland was a part of Sweden during the reign of Gustavus Adolphus, the day is celebrated by the University of Tartu, which was founded under the name Academia Gustaviana during Gustavus Adolphus' reign.

[10] Sjättenovembervägen ("Sixth November Road"), a part of the old Göta highway in the Stockholm borough of Älvsjö, is named for this day.

According to the 1924 street naming committee, the road was the entry point into Stockholm for the king's funeral procession.