Vallalaug is a warm spring located in the Ytri-Vallholt farm in Vallhólmur in Skagafjörður, Iceland.

The spring is centrally located and served as a gathering place, which was sometimes used as a regional parliament in centuries past.

[1] Sturla Sighvatsson and his men were there for the Battle of Örlygsstaðir in 1238, and some accounts state that his men met at Vallalaug.

[2] Later on, three local municipalities (Akrahreppur, Seyluhreppur, and Lýtingsstaðahreppur) used it for assemblies, which were often mentioned in old legal rulings and other sources.

[3] It would have served as a parliamentary meeting place into the middle of the 18th century.