Västgötalagen or the Westrogothic law is the oldest Swedish text written in the Latin script and the oldest law code of the Lands of Sweden. The text was written some time during the early 13th century and was the code of law used in Västergötland (Westrogothia) during the latter half of the 13th century. The oldest complete text is dated to 1281. Smaller fragments of an older text have been dated to 1250.

The law code exists in two versions, the Early Westrogothic law and the Late Westrogothic law. The first republication in modern times was Hans Samuel Collin and Carl Johan Schylter in 1827. A new edition by Gösta Holm was published in 1976.

See also

• Geats
• Götalagarna
• Stone of Mora